Relevant bibliographies by topics / Corrosione

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Corrosione'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 March 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Corrosione.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Corrosione"

1

Curtolo, Cristina. "Il circuito della frustrazione e la corrosione dell'orgoglio nell'intervento educativo." MINORIGIUSTIZIA, no. 3 (September 2012): 43–48. http://dx.doi.org/10.3280/mg2012-003006.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Sun, Ji Ku, Zong Jie Cao, De Jian Sun, and Yi Chen. "Characteristic of Corrosive Damages about Aircraft Structures in Service." Applied Mechanics and Materials 543-547 (March 2014): 316–19. http://dx.doi.org/10.4028/www.scientific.net/amm.543-547.316.

Full text
Abstract:
In engineering practices, aircraft structures have been damaged due to the structural corrosion, the corrosive problem of aircrafts needs to call high attentions for researchers because aircraft structures are composed of metals and compound metals. In this paper, corrosion problems and structural reliability of aircraft structures are discussed. Corrosion morphology and mechanism of aircraft structures are analyzed based on metal corrosion theory. The characteristics of the various types of corrosions of aircraft structures have been enumerated. The effect of environments in corrosion process of aircraft structures is studied. The law of corrosion developed at aircraft structural parts or materials is summarized. This research contributes to improving professionals capacity of corrosion prevention and control. It also provides technical support for aircraft maintainers.
APA, Harvard, Vancouver, ISO, and other styles
3

Yu, Zhu Huan, Jun Feng Qiang, and Hui Lu Li. "Electrochemical Corrosion Behavior of Different Graphite Shapes Cast Irons in Acidic Solution." Advanced Materials Research 906 (April 2014): 275–82. http://dx.doi.org/10.4028/www.scientific.net/amr.906.275.

Full text
Abstract:
The effect of graphite shapes on the electrochemical corrosion behavior of cast iron was studied by means of weight loss tests, electrochemical measurements and electron microscopy. It was found that the electrochemical corrosion behavior of graphite is significantly different from one other, and the corrosive potential difference between carbide ad the matrix is the main driving force of the different phase corrosions. Among them, the center A type and edge D type graphite exhibited the highest corrosion resistance. The corrosion of white iron is worst, because there are so many type carbides in white iron and so there is an obvious tendency to produce micro-cell in white iron.
APA, Harvard, Vancouver, ISO, and other styles
4

Sun, Qi Lei, Li Zhang, Jie Dong, and Lu Hua He. "Study on Electrochemical Behavior of Prestressed Reinforcement in Simulated Concrete Solution." Applied Mechanics and Materials 357-360 (August 2013): 917–20. http://dx.doi.org/10.4028/www.scientific.net/amm.357-360.917.

Full text
Abstract:
Using electrochemical impedance spectroscop (EIS) and polarization curve technique, the electrochemical behavior of prestressed reinforcement under different stress levels was studied in simulated concrete solution. The results show that: As the stress increasing, the impedance spectroscopy changes significantly, the entire impedance spectroscopy shows an elongated semi-circular deformation, high-frequency capacitance arc radius corrosion decreases with the corrosion progress, in other words, the reaction resistance decreases, the corrosion rate of the sample increases. And when the galvanized steel is in 1064MPa stresss condition, corrosion current density reaches the maximum, is 9 times larger than that of none stress corrosions condition. Under the combined effects of the external stress and corrosive media, dislocation can be emitted, value-added and moves. When it reached a critical state, it would lead to the crack nucleation of Stress corrosion cracking (SCC).
APA, Harvard, Vancouver, ISO, and other styles
5

Cong, Shen, Ke Tong, Dong Feng Li, Zhi Xin Chen, and Ke Cai. "Leakage Failure Analysis of the ERW Steel Pipeline." Materials Science Forum 993 (May 2020): 1224–29. http://dx.doi.org/10.4028/www.scientific.net/msf.993.1224.

Full text
Abstract:
This paper provides a thorough investigation on the leakage reason of the ERW steel pipeline in an oil field. Through appearance inspection, physicochemical inspection, metallographic inspection and scanning electron microscope (SEM), it was found that the main reason of corrosions was caused by residual liquid at the bottom of the pipeline and O2 and CO2 in the air pressure test. The corrosion medium was large volume of O2 and CO2 forming continuously saturated corrosive aqueous solution in small volume of residual liquid, and the corrosion type was the under-deposit corrosion. It is recommended to conduct hot air purging on the pipelined before pressure test for building pipelines in the future, and if the pipeline is not put into use in time, it is recommended to use nitrogen to maintain pressure.
APA, Harvard, Vancouver, ISO, and other styles
6

Yang, Yanpeng, Xiaojuan Cao, Yang Li, Zhongchi Wang, Bingjie Li, Xudong Jiang, Junji Jia, and Chunxu Pan. "Spontaneous Symmetry-Breaking in the Corrosion Transformation of Ancient Bronzes." Minerals 10, no. 8 (July 24, 2020): 656. http://dx.doi.org/10.3390/min10080656.

Full text
Abstract:
In general, during long-term museum conservation, ancient bronzes will generate new corrosion products also called the “secondary corrosion” on the surface of the unearthed “primary corrosion” products due to various environmental conditions. In this paper, the corrosion stages of several ancient Chinese bronzes are characterized by using optical microscope (OM), scanning electron microscope (SEM), energy dispersive spectrometer (EDS), X-ray diffraction (XRD) and Raman spectrometer (Raman). It is found that there exist phase transformation relationships in between the “primary corrosion” and the “secondary corrosion” stages (i.e., (1) the crystal lattice type tends to transform from a high symmetry system to a low symmetry system; (2) in case of the same crystal lattice type, the corrosions exhibit an inter-transformation or symbiosis). It is interesting to note that these transformation rules are very consistent with the well-known physical law of “spontaneous symmetry-breaking”, which won the 2008 Nobel Prize in Physics and also has been considered to be general law of nature, in addition to the principle of Gibbs free energy reduction. The significance of this discovery allows us to achieve the predictability and controllability of the bronze corrosion products (i.e., to predict the corrosive trends in advance and control the “second corrosion” by adjusting the conservation conditions. This research provides a novel conservation concept of ancient bronzes.
APA, Harvard, Vancouver, ISO, and other styles
7

Mahecha-Gómez, Andrey Felipe, Claudia Patricia Mejía-Villagrán, and Jhon Jairo Olaya-Flórez. "Aplicación de una metodología mixta para la selección de materiales resistentes a la corrosión en medios ácidos y salinos." Respuestas 20, no. 1 (January 1, 2015): 112. http://dx.doi.org/10.22463/0122820x.265.

Full text
Abstract:
Objetivo: En este artículo se presenta una metodología mixta de selección de materiales para determinar qué material presenta la mejor relación entre resistencia a la corrosión, propiedades mecánicas y costos. Metodología: El trabajo se llevó a cabo utilizando pruebas potenciodinámicas de extrapolación (Tafel) e impedancia electroquímica (EIS), sometiendo las muestras a medios corrosivos de NaCl (3%) y H2SO4 (5%). Las muestras utilizadas fueron el cerámico Zirconia no sinterizada y los aceros AISI 304L, AISI 316 y AISI 316L. Finalmente se aplicó una metodología de selección de materiales para escoger el material que presenta mejor comportamiento en este tipo de medios. Resultados: Como resultado, para las pruebas de extrapolación Tafel con 5% de ácido sulfúrico (H2SO4), se obtuvo que el acero AISI 316 presenta la corriente de corrosión más baja y una pasivación a mayor potencia. En el medio electrolítico con 3%de NaCl, se observa que los valores de potencial de corrosión más altos se presentan en los aceros inoxidables, evidenciándose una menor velocidad de corrosión en los aceros de la serie 316. Conclusiones: Como resultado se obtuvo que el acero AISI 316 utilizado presenta el mejor comportamiento de resistencia a la corrosión en los medios Medios ácidos y salinos.Abstract Objective: This article presents a mixed materials selection methodology is presented to determine which material has the best balance between corrosion resistance, mechanical properties and costs. Methods: The work was realized using potentiodynamic tests of extrapolation (Tafel) and electrochemical impedance (EIS), subjecting the samples to corrosive media of NaCl (3%) and H2SO4 (5%). The samples used were zirconia, steel AISI 304L, AISI 316 and AISI 316L. Finally a mixed methodology was applied in the materials selection to choose the material that has better comportment in this type of electrolyte. Results: For Tafel extrapolation test with 5% sulfuric acid (H2SO4) was obtained that AISI 316 steel which has the lowest current corrosion and passivation at higher power. In the electrolytic medium with 3 % NaCl, shows that higher values for corrosion potential present in stainless steels, showing a lower corrosion rate in the steels of the 316 series. Conclusions: The results showed that steel AISI 316 used presents the best performance to corrosion resistance in saline and acid.Palabras claves: Corrosión, Medios ácidos y salinos, Metodología mixta, Selección de materiales.
APA, Harvard, Vancouver, ISO, and other styles
8

P, Roshith, and Arivarasu M. "Improvements on hot corrosion behaviour of HVOF coated CO2 laser beam and pulsed gas tungsten arc weldments in 2.5% sulphur gas plus molten salt in industrial waste incinerator environment." Engineering Research Express 4, no. 2 (April 4, 2022): 025003. http://dx.doi.org/10.1088/2631-8695/ac5ebd.

Full text
Abstract:
Abstract This research article discusses in detail how the‌ ‌rate‌ ‌of‌ ‌corrosion‌ ‌increases‌ for the Alloy 254 in the ‌molten‌ ‌salt‌ ‌mixture‌ ‌of‌ ‌10‌ ‌wt%‌ ‌NaCl‌ ‌+ 40‌ ‌wt%‌ ‌K‌2‌SO‌4‌ + 40‌ ‌wt%‌ ‌Na‌2‌SO‌4‌ ‌+‌ ‌10‌ ‌wt%‌ ‌KCl‌ ‌and‌ ‌corrosive‌ ‌gas‌ combination of ‌ ‌2.5‌%‌ ‌SO‌2‌ ‌+‌ ‌3‌%‌ ‌O‌2‌ ‌+‌ ‌25‌%‌ ‌CO‌2‌ ‌+‌ ‌69.5‌%‌ ‌N‌2 in simulated municipal‌ ‌solid‌ ‌waste‌ ‌‌incinerator environment at 700 °C and 800 °C.‌ ‌In addition, the article shows rate of ‌thermal corrosion abridged due to the addition‌ ‌of‌ ‌80‌ ‌Ni-‌ ‌20‌ ‌Cr‌ ‌-‌High-velocity oxygen fuel ‌coating‌ ‌on‌ ‌the‌ ‌SMO‌ ‌254‌ ‌specimen. Thermogravimetric analysis is adapted to analyze the corrosion rate. A‌ ‌higher‌ ‌hardness‌ ‌was‌ ‌obtained‌ ‌for‌ ‌the‌ ‌High-velocity oxygen fuel coated‌ ‌specimen‌ ‌than‌ ‌that‌ ‌of‌ ‌base‌ ‌metal.‌ ‌Surface‌ ‌roughness‌ ‌was‌ ‌measured‌ ‌on‌ ‌the‌ ‌thermal‌ ‌barrier‌ ‌coated‌ ‌surface.‌ As a result of the impact of molten salt and corrosive gas, hot corrosion by-products such as ‌sulphides, chlorides‌ ‌and‌ ‌Na‌ are produced, which are observed to increase the severity of corrosion rate. ‌‌ The study provides a detailed analysis of the metallurgical changes along the cross-section on the hot corroded samples by optical and Scanning electron microstructural image analysis. X-ray diffraction analysis was used to know about the corrosion products formed during corrosion. Formation‌ of the major protective oxide phases such as NiCr2O4, Cr2O3, NiO and CrMnO4 provide better corrosion resistance to the substrate in the coated samples. The diffusion of the corrosive elements along the cross-section of the weld interface, weld zone, and base metal zone was analyzed in detail using Electron dispersive spectroscopy‌ ‌data in the point scan, line scan, and x-ray mapping techniques. Thermal spray coatings were found to be effective to prevent the hot corrosion, however, a higher weight gain (17.75 mg cm−2) was observed on the pulse current gas tungsten arc weldment sample in the simulated environment compared to a weight gain (2.66 mg cm−2) base metal specimen at 700 °C. Spallation of coated surface occurred at 800 °C, and it could be concluded that the coating has found to be effective in preventing the hot corrosion and safe to operate at a temperature of 700 °C for Alloy 254 in this aggressive simulated environment.
APA, Harvard, Vancouver, ISO, and other styles
9

Ryu, Hwa Sung, and Han Seung Lee. "Study on the Anti- Corrosion Properties of Organic and Inorganic Inhibitor by Electrochemical Treatment in Aqueous Solution." Advanced Materials Research 415-417 (December 2011): 2070–73. http://dx.doi.org/10.4028/www.scientific.net/amr.415-417.2070.

Full text
Abstract:
The various methods for improving chloride penetration resistance in the reinforced concrete have been developed. Among the related general ways, using of corrosion inhibitor became very common. Therefore, in this study, in order to comprehend performance of corrosion inhibitor, the experiment study was conducted about corrosion characteristic of 3 steps(0.0, norm 1/2, norm) compared to organic corrosion inhibitor standard use of liquid and molar 3 steps(0.0, 0.3, 0.6%) of Chloride by added amount of inorganic corrosion inhibitor by the corrosion inhibitor types about 2.4kg/m3, 4.8kg/m3based on Chloride ion content 1.2kg/m3for service life prediction of concrete structure by using Poteniostat. As results, in the case of inorganic nitrous acid corrosion inhibitor, it was confirmed that anti-corrosive performance of Chloride ion content 1.2kg/m3by corrosion Ecorr -0.30V in more than molar ratio 0.3%, and it also was confirmed that anti-corrosive performance of 2.4kg/m3, 4.8kg/m3in more than molar ratio 0.6%. In addition, the excellent anti-corrosive performance of organic corrosion inhibitor was shown in 1/2(0.42kg/m3) of norm regardless of Chloride ion content, and it can be seen that absorption types organic corrosion inhibitor has excellent anti-corrosive performance compared to the inorganic nitrous acid corrosion inhibitor by the added amount of corrosion inhibitor.
APA, Harvard, Vancouver, ISO, and other styles
10

Mao, Jincheng, Difei Han, Jinzhou Zhao, Xiaojiang Yang, Chong Lin, and Heng Zhang. "Experimental and Theoretical Study on Cyanuric Chloride Derivatives as Corrosion Inhibitors for Oxyen Corrosion of Mild Steel in High Salinity Corrosive Medium." Revista de Chimie 72, no. 2 (May 7, 2021): 119–36. http://dx.doi.org/10.37358/rc.21.2.8425.

Full text
Abstract:
Designed and synthesized two corrosion inhibitors that can resist corrosion of low-carbon steel in high-salinity corrosive media. When these compounds are used as corrosion inhibitors in high salinity corrosive media, the laboratory evaluation results clearly showed that the two corrosion inhibitors had an excellent corrosion resistance. The synthetic corrosion inhibitors have an symmetrical structure which not only has a symmetrical appearance but also has the practical significance of forming an entire surface covering layer, which avoids the general corrosion and pitting corrosion.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Corrosione"

1

Bassini, Serena. "Bronzi e bronzi dorati esposti all’azione della pioggia: corrosione ed inibizione." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4237/.

Full text
Abstract:
Il presente lavoro di tesi è stato organizzato in tre parti principali: in prima analisi, è stato effettuato uno studio preliminare di patine reali prelevate da bronzi esposti all’aperto, al fine di verificare l’ipotesi che diverse geometrie di esposizione generano patine differenti nella morfologia e nella composizione sulla superficie della lega. In particolare, è stata posta l’attenzione sullo Sn, il quale esibisce un differente comportamento in aree esposte o riparate dalla pioggia battente. Successivamente quindi, mediante una prova di invecchiamento accelerato che riproduce l’azione della pioggia battente (dropping test) è stata quindi studiata l’efficienza dell’inibitore PropS-SH (3-mercapto-propil-trimetossi-silano), il quale si è dimostrato un possibile sostituto del BTA nell’inibizione della corrosione dei bronzi e tra i primi candidati nello studio dell’inibizione della corrosione nei bronzi dorati. Lo studio è stato effettuato impiegando il dropping test sia per la pre-patinazione (in modo da produrre un substrato rappresentativo di quello su cui si applica l’inibitore) che per l’esposizione vera e propria. I risultati ottenuti sono stati poi confrontati con quelli ottenuti in un lavoro precedente, in cui è stata studiata l’efficienza dello stesso inibitore in condizioni che simulano invece l’azione della pioggia stagnante. Infine, sono stati condotti studi preliminari sulla corrosione di campioni di bronzo dorato mediante invecchiamento accelerato in condizioni che simulano sia la pioggia battente che quella stagnante (wet&dry test).
APA, Harvard, Vancouver, ISO, and other styles
2

Ottaviani, Giulia. "Procedimenti analitici per il calcolo evolutivo della corrosione in armature metalliche." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amslaurea.unibo.it/4301/.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

LORENZI, Sergio (ORCID:0000-0002-1337-7590). "Corrosione-erosione dell'acciaio a contatto con conglomerati cementizi allo stato fresco." Doctoral thesis, Università degli studi di Bergamo, 2010. http://hdl.handle.net/10446/611.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Mascii, Francesco. "Risk-Based Inspection (RBI) per la gestione della corrosione sotto coibente (CUI)." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020.

Find full text
Abstract:
La corrosione sotto coibente, più conosciuta col termine inglese Corrosion Under Insulation (CUI), è una forma di corrosione localizzata molto aggressiva nelle raffinerie, nelle industrie chimiche, petrolchimiche e off-shore, poiché è responsabile di diversi rilasci di sostanze che possono provocare incidenti relativi alla sicurezza, alla salute, all'ambiente, alla perdita di produzione, oltre ad essere la causa di una buona parte delle spese di manutenzione per le riparazioni. La tesi tratta la gestione della CUI attraverso la metodologia Risk-Based Inspection (RBI), ovvero la pianificazione delle ispezioni sulla base del rischio, e approfondisce l’analisi della CUI indagando sulle migliori tecniche non distruttive per la rilevazione di questo fenomeno senza la rimozione del coibente. Il fenomeno della CUI e la metodologia RBI vengono descritti usufruendo delle più autorevoli pubblicazioni e norme ad essi dedicati, mentre la possibilità di sviluppare questi temi dal punto di vista pratico è stata possibile grazie alla collaborazione dello stabilimento INEOS Manufacturing Italia di Rosignano Solvay. La vicinanza al mare rende l’impianto chimico di INEOS più soggetto alla corrosione sotto coibente rispetto ad altri situati nell’entroterra, pertanto è stato applicato un approccio di tipo RBI all’attrezzatura soggetta alla CUI, che permette di garantire una maggiore sicurezza per le persone, l’ambiente e l’economia del sito.
APA, Harvard, Vancouver, ISO, and other styles
5

Fabris, Riccardo. "Studio della resistenza a corrosione in ambiente alcalino di leghe metalliche per l'industria meccanica." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

Find full text
Abstract:
Molto spesso negli impianti industriali vengono impiegate soluzioni di natura alcalina quali fluidi refrigeranti o detergenti necessari per il loro corretto funzionamento o per la produzione del prodotto finito. Il progettista meccanico tende a focalizzarsi sulle prestazioni fisico-meccaniche dei materiali metallici, trascurando però gli aspetti che riguardano la durabilità e quindi la corrosione. In questo caso la progettazione può portare allo sviluppo di prodotti e/o macchinari e/o impianti che possono necessitare di interventi di manutenzione straordinaria per mantenere il loro corretto uso/funzionamento. In questa tesi si è studiato il comportamento a corrosione di diverse tipologie di leghe di alluminio (Al 5083, Al 6082, Al 7075) con e senza trattamenti di anodizzazione, di acciai al carbonio (C40) e inossidabili (AISI 304), di ottoni non rivestiti e nichelati. Sono state condotte misure elettrochimiche in ambienti a diversi pH, che hanno permesso una valutazione sia dal punto di vista termodinamico (attraverso la misura del potenziale di libera corrosione, Ecor), sia dal punto di vista cinetico (attraverso misure di polarizzazione anodica per individuare la densità di corrente di corrosione (icor). Sono state inoltre costruite delle scale di corrosione galvanica nei diversi ambienti di prova così da valutare eventuali accoppiamenti tra le leghe che minimizzino la tendenza alla corrosione.
APA, Harvard, Vancouver, ISO, and other styles
6

Barbaresi, Elisa. "Studio e sperimentazione di sonde per il monitoraggio della corrosione delle armature in calcestruzzo." Doctoral thesis, Università Politecnica delle Marche, 2010. http://hdl.handle.net/11566/242268.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

VICERE', ANNAMARIA. "Studio della resistenza a corrosione di leghe di alluminio sottoposte a deformazione plastica severa." Doctoral thesis, Università Politecnica delle Marche, 2020. http://hdl.handle.net/11566/274612.

Full text
Abstract:
Negli ultimi anni i metalli ultrafini, ossia con un grano cristallino al di sotto del micron, hanno destato molto interesse per la loro elevata resistenza meccanica abbinata a una adeguata duttilità. Attraverso tecniche di deformazione plastica severa (Severe Plastic Deformation, SPD) è possibile ottenere dei materiali metallici ultrafini. Tra queste, la tecnica dell’Equal Channel Angular Pressing (ECAP) è molto diffusa perché permette di ottenere una struttura ultrafine in tutto il volume del materiale, il quale mantiene la stessa sezione trasversale dopo pressatura ed è privo di ogni porosità residua. Inoltre, l’ECAP offre la possibilità di estendere questo processo anche a un livello industriale. Le leghe di alluminio sono ampiamente utilizzate per differenti applicazioni tecnologiche e industriali, per la loro leggerezza, le buone proprietà meccaniche e il loro basso costo. Se da un lato, in letteratura, le proprietà meccaniche dei materiali processati attraverso le tecniche di deformazione plastica severa sono state ampiamente discusse, dall’altro rimangono molte incertezze e risultati controversi sul comportamento a corrosione di questi materiali. Infatti, questi processi che portano a un affinamento dei grani provocano anche altri cambiamenti a livello metallurgico e microstrutturale: precipitazione delle fasi, distribuzione delle impurità, la finitura superficiale ecc. Di conseguenza, il comportamento a corrosione dei materiali che hanno subito questi processi può essere influenzato da questi cambiamenti. I lavori presenti in letteratura in questo ambito sono anche contrastanti, persino quelli relativi alla stessa lega, perché questi cambiamenti avvengono in maniera complessa e talvolta differente. In questa ricerca è stato studiato il comportamento a corrosione di due leghe di alluminio, la AA6012 e la AA5083, sottoposte al processo ECAP. In particolare, si è valutata l’influenza sul comportamento a corrosione di queste leghe da parte dell’ECAP e dei trattamenti criogenici e termici effettuati prima o dopo della deformazione plastica severa. L’analisi della resistenza a corrosione delle leghe di alluminio è stata effettuata a temperatura ambiente tramite una caratterizzazione elettrochimica in soluzioni acquose alla stessa concentrazione di cloruri (0,1 M Cl-), ma a differenti pH (pH 2 e pH 6,5). A questo scopo, sono state effettuate prove elettrochimiche di polarizzazione potenziodinamica ciclica, curve di Tafel, misure di resistenza alla polarizzazione e impedenza elettrochimica. Dai risultati ottenuti è emerso che il processo ECAP peggiora in piccola misura il comportamento a corrosione delle leghe in ambiente acido, risultato evidente prima dell’invecchiamento della lega e nei test di breve esposizione. In ambiente neutro, d’altra parte, né il processo ECAP né i trattamenti termici e il trattamento criogenico hanno influenzato la resistenza a corrosione delle leghe. Il trattamento criogenico, effettuato prima dell’ECAP, influenza il comportamento a corrosione della lega AA6012, solo prima di invecchiamento naturale o artificiale, permettendo un recupero della resistenza a corrosione rispetto a effettuare il solo processo ECAP.
In the last few years, ultrafine metals, with a crystalline grain below the micron, have gained particular interest due to their high mechanical strength combined with adequate ductility. Through severe plastic deformation techniques (Severe Plastic Deformation, SPD) it is possible to obtain ultra-fine grained materials. Among these, the technique of the Equal Channel Angular Pressing (ECAP) is very widespread because it allows an ultrafine structure throughout the volume of the material, which retains the same cross-section after pressing and its free from any residual porosity. Furthermore, ECAP offers the possibility to extend this process even to an industrial level. Aluminum alloys are widely used for different technological and industrial applications, due to their lightness, good mechanical properties and their low cost. On the one hand, in the literature, the mechanical properties of the materials processed by severe plastic deformation techniques have been widely discussed, on the other hand many uncertainties and controversial results remain on the corrosion behavior of these materials. In fact, these processes that lead to grain refinement also cause other metallurgical and microstructural changes: precipitation of the phases, distribution of impurities, surface finishing, etc. As a result, the corrosion behavior of the materials that have undergone these processes can be influenced by these changes. The works present in the literature in this area are also contradictory, even those related to the same alloy, because these changes occur in a complex and different way. In this research the corrosion behavior of two aluminum alloys, AA6012 and AA5083, subjected to the ECAP process was studied. In particular, the influence on the corrosion behavior of aluminum alloys by ECAP and cryogenic and thermal treatments carried out before or after severe plastic deformation was evaluated. The analysis of the corrosion resistance of aluminum alloys was carried out at room temperature by means of electrochemical characterization in aqueous solutions at the same chloride concentration (0.1 M Cl-), but at different pH (pH 2 and pH 6.5). For this purpose, cyclic potentiodynamic polarization, Tafel curves, polarization resistance and impedance spectroscopy electrochemical tests were performed. The experimental results show that the ECAP process deteriorates the corrosion behavior of the alloys in acid environment to a small extent, result that is clear before the aging of the alloy and in short exposure tests. In the neutral environment, on the other hand, neither the ECAP process nor the thermal treatments and the cryogenic treatment have influenced the corrosion resistance of the alloys. The cryogenic treatment, carried out before ECAP, allows a recovery of corrosion resistance of AA6012 alloy only before natural or artificial aging.
APA, Harvard, Vancouver, ISO, and other styles
8

MARCASSOLI, Paolo. "Modello per la previsione della velocità di corrosione degli acciai al carbonio in acque dolci." Doctoral thesis, Università degli studi di Bergamo, 2010. http://hdl.handle.net/10446/614.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

CASPRINI, Elena (ORCID:0000-0003-2244-8212). "Un protocollo per la valutazione degli effetti della corrosione sulle strutture in CA in ottica Life Cycle Engineering." Doctoral thesis, Università degli studi di Bergamo, 2021. http://hdl.handle.net/10446/194487.

Full text
Abstract:
Il nuovo protocollo proposto nella presente ricerca consente di orientare e gestire la campagna di indagini diagnostiche per le strutture esistenti in CA per identificare un possibile Scenario di Rischio di Corrosione (CRS) e la classe di aggressività. Il protocollo consente poi di definire e calibrare dei difetti equivalenti da includere nei modelli strutturali in modo da includere gli effetti della corrosione nella valutazione del comportamento strutturale. Tramite questo approccio è possibile valutare il decadimento delle prestazioni nel tempo della struttura; tale previsione consente di definire la vita residua della struttura, i criteri e i tempi per la gestione del piano di manutenzione e indicazioni di massima sulla fattibilità dell’intervento di recupero o sulla necessità di demolizione. Il protocollo rappresenta quindi uno strumento scientifico a supporto del processo decisionale per il recupero delle strutture esistenti.
The novel assessment protocol proposed in this research allows guiding and managing the on-site diagnostic investigation campaign for existing RC structures in order to identify possible Corrosion Risk Scenario and aggressiveness class. The protocol enables defining and calibrating equivalent corrosion damage parameters to be included in the structural models to account for the corrosion-induced damage in the structural assessment. This way, structural performance over time can be assessed. Based on the prediction of Life Cycle structural performances, structural residual life, maintenance management criteria and timing, and major indications on the feasibility of the retrofit intervention or the need of demolition can be derived.
APA, Harvard, Vancouver, ISO, and other styles
10

MORELLI, STEFANIA. "Resistenza a corrosione da CMAS di barriere termiche (TBCs): influenza della microstruttura, materiali e architettura del rivestimento." Doctoral thesis, Università degli studi di Modena e Reggio Emilia, 2022. http://hdl.handle.net/11380/1277126.

Full text
Abstract:
Le barriere termiche (TBC) sono rivestimenti ceramici applicati su componenti metallici nelle sezioni calde delle turbine a gas industriali (IGT), dove le temperature dei gas sono superiori al punto di fusione dei substrati metallici. Le TBC forniscono isolamento termico alle parti metalliche sottostanti: agendo in sinergia con un sistema interno di raffreddamento ad aria, le TBC riducono le temperature superficiali del metallo. Lo “stato dell’arte” delle TBC è la zirconia stabilizzata con il 7-8% in peso di Y2O3 (YSZ) che ha un alto punto di fusione (2690°C), una stabilità di fase sopra i 1200°C, e bassa conducibilità termica. Un tipico sistema di rivestimento comprende un'architettura a doppio strato, in cui uno strato YSZ poroso e termoisolante è depositato mediante spruzzatura al plasma su un bondcoat metallico (leghe MCrAlY, M = Ni, Co o NiCo) che protegge il substrato di superlega dall'ossidazione e migliora l'adesione dello strato superiore. Durante l'esposizione ad alte temperature, tra questi due strati, si forma per ossidazione del bondcoat uno strato chiamato thermally grown oxide (TGO) costituito da α-Al2O3. Il cedimento delle TBC può essere dovuto sia a sollecitazioni termiche cicliche indotte dall’accensione e spegnimento delle turbine, che provocano la nucleazione e la crescita di cricche, sia alla degradazione chimica. Quando le turbine a gas operano in ambienti polverosi, possono ingerire polveri di silicati, che poi formano depositi fusi a base di miscele di CaO-MgO-Al2O3-SiO2 (CMAS) sulla superficie dei componenti delle parti calde. Il presente lavoro è incentrato sullo studio di sistemi TBC con una maggiore resistenza chimica ai depositi di CMAS. La prima parte di questa tesi studia l’infiltrazione e il meccanismo di reazione tra la CMAS e i rivestimenti 8YSZ con diverse microstrutture: porose ottenute tramite atmospheric plasma spraying (APS) utilizzando materie prime a standard e ad elevata purezza; dense-vertically cracked (DVC) APS; microstrutture colonnari ottenute tramite suspension plasma spraying (SPS). È stato riscontrato che la CMAS attacca la YSZ dissolvendo i suoi bordi grano e che l’utilizzo di un materiale a bassa purezza accelera la dissoluzione. Nella seconda parte di questo lavoro, dopo aver identificato la microstruttura DVC come la più promettente in termini di resistenza a corrosione da CMAS, sono stati effettuati test su tre nuovi rivestimenti: ZrO2 drogata con Gd/Yb/Y, Gd2ZrO7 e ZrO2 con 55% in peso di Y2O3. Tutti sono stati prodotti con una microstruttura DVC e depositati sullo stesso tipo di bondcoat. 8YSZ porosi e DVC sono stati utilizzati come termine di confronto. Inoltre, sono stati testati sei sistemi a doppio strato, in cui la 8YSZ con microstruttura porosa o DVC è stata impiegata come strato inferiore ad uno strato DVC di Gd/Yb/Y, Gd2ZrO7 e ZrO2 con 55% in peso di Y2O3. Questi sistemi sono stati sottoposti a test di corrosione CMAS e test di ciclaggio termico (TCF). I rivestimenti multistrato hanno mostrato una durata a TCF più lunga rispetto ai rivestimenti monostrato. D'altra parte, i test CMAS hanno mostrato che i nuovi materiali hanno una migliore resistenza alla corrosione. Il DVC Gd2ZrO7, ha mostrato un'eccellente resistenza alla corrosione CMAS dovuta alla formazione di uno strato solido di Gd-apatite all'interfaccia con CMAS fusa che blocca l'ulteriore reazione e rallentata la penetrazione di CMAS. La combinazione di uno strato superiore di Gd2ZrO7 con uno strato inferiore poroso 8YSZ mostra una maggiore resistenza a TCF. Sebbene il sistema a doppio strato non raggiunga la stessa resistenza TCF del puro YSZ, la combinazione tra una ragionevole durata a TCF e un'eccellente resistenza CMAS lo rende una buona scelta per le turbine che operano in condizioni ambientali ostili.
Thermal barrier coatings (TBCs) are refractory-oxide ceramic coatings applied on metallic components in the hot section of industrial gas turbines (IGT), where gas temperatures are higher than the melting point of the metallic substrates. TBCs provide thermal insulation the underlying metal parts: acting in synergy with an internal air-cooling system, TBCs reduce the temperatures of the metal down to tolerable levels. The “state of the art” for TBCs is 7-8 wt.% (≈3.5 mol.%) Y2O3-stabilized zirconia (YSZ) with high melting point (2690 °C), phase stability up to 1200 °C, and low thermal conductivity. A typical coating system comprises a bi-layer architecture, where a porous, thermally insulating YSZ layer is deposited by plasma spraying onto a metallic bond coat (MCrAlY alloys, M = Ni, Co or NiCo) which protects the superalloy substrate against oxidation and improves the top layer adhesion. During exposure to high temperatures, between these two layers, a further layer called thermally grown oxide (TGO) made of α-Al2O3 is formed by oxidation of the MCrAlY bond coat. Failure of TBCs during service can be due either to the cyclic thermal stresses induced by starting and stopping the turbine, which cause the nucleation and growth of delamination cracks, or by chemical degradation. Specifically, when gas turbines operate in dusty environments, they can ingest silicate powders, which then form molten deposits based on CaO-MgO-Al2O3-SiO2 (CMAS) mixtures on the surface of hot-section components. The present work is especially focused on studying TBC systems with improved chemical resistance to molten CMAS deposits. The first part of this Thesis studies the infiltration behaviour and reaction mechanism between the CMAS deposit and 8YSZ coatings with various kinds of microstructures: porous, layers from atmospheric plasma spraying (APS) of standard and high-purity YSZ feedstock; a dense-vertically cracked (DVC) APS layer; and a columnar YSZ coating obtained by suspension plasma spraying (SPS). It was found that CMAS attacks YSZ by dissolving its grain boundaries, and a low-purity material accelerates the dissolution by molten CMAS. It was also found that the DVC microstructure is effective for reducing the infiltration of molten CMAS. In the second part of this work, having established the DVC microstructure as the most promising for improved resistance to CMAS corrosion, tests were carried out on three novel coating materials: Gd/Yb/Y co-doped ZrO2, Gd2ZrO7 and ZrO2-55 wt.%Y2O3. All were manufactured as DVC layers on the same type of MCrAlY bond coat. Porous and DVC 8YSZ were employed as terms of comparison. In addition, six ceramic bilayers systems were also tested, where 8YSZ with either porous or DVC microstructure was employed as a bottom layer under a DVC top layer of either Gd/Yb/Y co-doped ZrO2, Gd2ZrO7 or ZrO2-55 wt.%Y2O3. These systems were subjected to CMAS corrosion tests and thermal cycling fatigue (TCF) tests. Multilayered coatings showed longer thermal cycling fatigue life compared to monolayer coatings. On the other hand, CMAS tests showed that the novel materials do exhibit improved corrosion resistance. DVC Gd2ZrO7 layers, in particular, exhibited excellent CMAS corrosion resistance because the formation of a solid Gd-apatite layer at the interface with molten CMAS blocked further reaction and slowed down CMAS penetration. The combination of a Gd2ZrO7 top layer with a porous 8YSZ bottom layer shows enhanced resistance to thermal cycling fatigue. Although the bi-layer system does not attain the same TCF resistance of pure YSZ, the combination between reasonable TCF life and excellent CMAS resistance makes it a good choice for turbines operating in demanding environmental conditions.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Corrosione"

1

A, Aulicino F., and Istituto superiore di sanità (Italy), eds. Studio di un caso di corrosione batterica in un acquedotto di una regione italiana. Roma: Istituto superiore di sanità, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
2

Symposium on Corrosion and Corrosive Degradation of Ceramics (1989 Anaheim, Calif.). Corrosion and corrosive degradation of ceramics. Westerville, Ohio: American Ceramic Society, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
3

Principles and prevention of corrosion. New York: Macmillan Pub. Co., 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
4

Principles and prevention of corrosion. 2nd ed. Upper Saddle River, NJ: Prentice Hall, 1996.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
5

Gerhard, Kreysa, Schütze Michael, and Dechema, eds. Corrosion handbook: Corrosive agents and their interaction with materials. 2nd ed. Weinheim: Wiley-VCH, 2004.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
6

G, Kreysa, Eckermann R, Behrens Dieter, and DECHEMA, eds. DECHEMA corrosion handbook: Corrosive agents and theirinteraction with materials. Weinheim: VCH, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
7

Dieter, Behrens, and DECHEMA, eds. DECHEMA corrosion handbook: Corrosive agents and their interaction with materials. Weinheim: VCH Verlagsgesellschaft (for) DECHEMA, 1990.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
8

Dieter, Behrens, and DECHEMA, eds. DECHEMA corrosion handbook: Corrosive agents and their interaction with materials. Weinheim: VCH Verlagsgesellschaft (for) DECHEMA, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
9

Dieter, Behrens, and DECHEMA, eds. DECHEMA corrosion handbook: Corrosive agents and their interaction with materials. Weinheim: VCH Verlagsgesellschaft (for) DECHEMA, 1991.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
10

G, Kreysa, Eckermann R, and Behrens Dieter, eds. Dechema corrosion handbook: Corrosive agents and their interaction with materials. Frankfurt: VCH Verlagsgesellschaft, Germany, 1993.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
More sources

Book chapters on the topic "Corrosione"

1

Nasab, Shima Ghanavati, Abolfazl Semnani, Mehdi Javaheran Yazd, Homa Kahkesh, Navid Rabiee, Mojtaba Bagherzadeh, and Mohammad Rabiee. "Fruits as Corrosion Inhibitors in Corrosive Environments." In Natural Corrosion Inhibitors, 41–46. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-031-79629-6_5.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Tidblad, Johan, Vladimir Kucera, and Susan Sherwood. "Corrosion Corrosion." In The Effects of Air Pollution on Cultural Heritage, 53–103. Boston, MA: Springer US, 2009. http://dx.doi.org/10.1007/978-0-387-84893-8_3.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Wranglén, Gösta. "Corrosion protection by change in the corrosive medium." In An Introduction to Corrosion and Protection of Metals, 165–73. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-4850-1_13.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

"Corrosion of Austenitic Stainless Steel Weldments." In Corrosion of Weldments, 43–75. ASM International, 2006. http://dx.doi.org/10.31399/asm.tb.cw.t51820043.

Full text
Abstract:
Abstract Austenitic stainless steels exhibit a single-phase, face-centered cubic structure that is maintained over a wide range of temperatures. This chapter provides a basic understanding of grade designations, properties, and welding considerations of austenitic stainless steels. It also discusses general types of corrosive attack and their effects on service integrity as well as detection and control measures. The five corrosive attack mechanisms covered are intergranular corrosion, preferential attack associated with weld metal precipitates, pitting and crevice corrosion, stress-corrosion cracking, and microbiologically influenced corrosion.
APA, Harvard, Vancouver, ISO, and other styles
5

Martínez Palou, Rafael, and Natalya V. Likhanova. "Application of ionic liquids as Corrosion Inhibitors in the Oil Industry." In Applications of Ionic Liquids in the Oil Industry: Towards A Sustainable Industry, 94–121. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815079579123010008.

Full text
Abstract:
The oil industry presents corrosion problems from crude oil extraction and transportation to the refining process, making it a highly demanding industry in terms of corrosion inhibitors. This chapter reviews the concepts related to the topic of corrosion and reviews the advances in the use of ILs to mitigate corrosion in different corrosive environments typical of this industry.
APA, Harvard, Vancouver, ISO, and other styles
6

Sharma, R. "Sources of Active Ingredients for Sustainable Corrosion Inhibitors." In Sustainable Corrosion Inhibitors, 30–45. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901496-2.

Full text
Abstract:
Metal corrosion is a grave problem, having deleterious effects on human health, the economy, the environment, and many engineering schemes, for example, automobiles, aircraft, naval vessels, and pipelines. For the confirmation of enduring reliability and stability of alloys and metals, corrosion-protective surfaces are of the greatest significance, for example, ions and water, through restraining their interactions with corrosive species. Though, their applied submissions are frequently bounded whichever through deprived mechanical robustness or else through the incapability to resist low surface tension liquids, for example, alcohols and oil. In this chapter, we have focused on diverse materials as sustainable corrosion inhibitors such as organic corrosion inhibitors, green corrosion inhibitors, and polymer-based corrosion inhibitors to protect materials from being corroded. Amongst them, we especially focus on green corrosion inhibitors as a consequence of simple manufacturing, easy availability, cost-effectiveness, and biodegradable nature.
APA, Harvard, Vancouver, ISO, and other styles
7

El Ibrahimi, B. "Sustainable Corrosion Inhibitors for Copper and its Alloys." In Sustainable Corrosion Inhibitors, 175–203. Materials Research Forum LLC, 2021. http://dx.doi.org/10.21741/9781644901496-8.

Full text
Abstract:
The good properties of copper, as well as its alloys, make them a often used metallic materials in various industries. Regardless of their excellent corrosive resistance, the corrosion process of copper materials can occur under some specific conditions, hence, the need for corrosion inhibitors. Recently, due to many environmental agencies, the “green” aspect was introduced in many fields, including inhibition of corrosion. Keeping in mind economic and eco-friendly aspects, a wide range of compounds were employed as ecological inhibitors for copper materials. For this purpose, the current chapter aims to explore the application of numerous compounds as sustainable inhibitors to control the corrosion of copper materials in various media.
APA, Harvard, Vancouver, ISO, and other styles
8

Kumar, Sudheer, Sukhila Krishnan, Sushanta Kumar Samal, Smita Mohanty, and Sanjay Kumar Nayak. "Polymer Nanocomposites Coating for Anticorrosion Application." In Polymer Nanocomposites for Advanced Engineering and Military Applications, 254–94. IGI Global, 2019. http://dx.doi.org/10.4018/978-1-5225-7838-3.ch009.

Full text
Abstract:
Corrosion is the foremost reason for the deterioration of metallic components used in harsh environments and hence research on the development of an innovative protective system with admirable performance has become a subject of leading importance. Currently, chromates free organic or the polymer coatings on the metal substrate bestow an efficient barrier amongst the metal and inhibit corrosion and save the environment. Researchers have involved in the development of polymer coating containing nanoparticles because reinforcement of nanoparticles decreases the porosity and provides a zig-zag diffusion path which in turn forms barrier layer on the metal surface to protect the metal from the harmful corrosive species. This present chapter deliberates the application of polymer-based nanocomposite coating to mitigate the corrosion of metals against harsh environment. This chapter covers the utilization of carbon-based nanoparticles, inorganic nanoparticle, conductive polymer, self-heling polymer, etc., and could shows a new insight to for anti-corrosive metal surface protective coating.
APA, Harvard, Vancouver, ISO, and other styles
9

Kumar, Sudheer, Sukhila Krishnan, Sushanta Kumar Samal, Smita Mohanty, and Sanjay Kumar Nayak. "Polymer Nanocomposites Coating for Anticorrosion Application." In Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, 1093–134. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8591-7.ch045.

Full text
Abstract:
Corrosion is the foremost reason for the deterioration of metallic components used in harsh environments and hence research on the development of an innovative protective system with admirable performance has become a subject of leading importance. Currently, chromates free organic or the polymer coatings on the metal substrate bestow an efficient barrier amongst the metal and inhibit corrosion and save the environment. Researchers have involved in the development of polymer coating containing nanoparticles because reinforcement of nanoparticles decreases the porosity and provides a zig-zag diffusion path which in turn forms barrier layer on the metal surface to protect the metal from the harmful corrosive species. This present chapter deliberates the application of polymer-based nanocomposite coating to mitigate the corrosion of metals against harsh environment. This chapter covers the utilization of carbon-based nanoparticles, inorganic nanoparticle, conductive polymer, self-heling polymer, etc., and could shows a new insight to for anti-corrosive metal surface protective coating.
APA, Harvard, Vancouver, ISO, and other styles
10

Roy, Sudesna, and Pramod kumar Mandal. "Corrosion Resistance Methods for Stainless Steel." In New Challenges and Industrial Applications for Corrosion Prevention and Control, 208–25. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2775-7.ch009.

Full text
Abstract:
304 grade stainless steel is known to be important in most structural applications due to its high mechanical strength, hardness, and machinability. It is considered a versatile steel that has good formability, can be welded as it is, and is non-magnetic austenitic structure. The corrosion resistance is also excellent at room temperature for most corrosive acids and alkalis. However, its corrosion resistance decreases at higher temperatures when exposed to water for prolonged periods of time. It is sensitive to pitting, crevice and stress corrosion cracking at elevated temperatures. In some cases, the resistance is improved by addition of corrosion inhibitor that negatively affects its formability and welding advantages. Therefore, other methods of corrosion protection are desired. This chapter provides in-depth review of corrosion protections materials and methods that have been used for protecting 304SS in different specific applications. It also provides systemic analysis of the potentiodynamic polarization method to compare the corrosion potential of different materials.
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Corrosione"

1

Wenguang, Zhang, Yang Chenggang, Yi Zilong, Li Chan, Pu Chenghao, Xu Yuting, and Han Dongao. "Study on Corrosion Mechanism of Stellite Hard Alloy Layer of a Main Pump Component." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-67697.

Full text
Abstract:
Stellite 12 alloy was cladded on the surface of Thrust runner of a main pump using HIP technology. After product testing, lots of corrosions were found on the hard layer. SEM and EDS analysis technologies were used in order to find out the causes and mechanism inducing these corrosions. SEM results indicated that two kinds of corrosions locating on the hard layer. One type is central corrosion pit, another type is Selective Phase Corrosion (SPC).EDS showed that the central and adjacent corrosive areas were rich in carbon, low in cobalt, chromium and tungsten elements for the first type of corrosion. As for the second type of corrosion, EDS indicated that the corrosive zones were typically high in tungsten, chromium and carbon, and low in cobalt. Meanwhile, the presence of sulfur and chlorine elements may aggravate the initiation and continuation of corrosion.
APA, Harvard, Vancouver, ISO, and other styles
2

Khandekar, Shekhar, Lakshmi Vedula, and Vinod Malshe. "Tin Corrosion Induced by Corrosive De-Ionized (DI) Water." In ISTFA 1999. ASM International, 1999. http://dx.doi.org/10.31399/asm.cp.istfa1999p0141.

Full text
Abstract:
Abstract Very highly purified water such as De-ionized (DI) water tends to become very corrosive once exposed to the atmosphere. This “Hungry Water” as known in the water purification world is known to be a major source of corrosion [1]. The DI water was responsible for corrosion of tin during autoclave (pressure cooker) testing of Integrated Circuit (IC) devices assembled in plastic Quad Flat Package (QFP) with fine pitch leads. The copper leads of these packages are plated with solder. The copper leads of the packages are plated with solder composed of Lead and Tin. Due to the effect of corrosive water, Tin from solder corroded during the autoclave testing and formed thin whiskers of solder. These whiskers created a leakage path between the leads causing the devices to fail for pin to pin leakage.
APA, Harvard, Vancouver, ISO, and other styles
3

Hua, Y. N., S. Redkar, Ron Dickinson, S. L. Peh, and Shirley. "A Study on Fluorine-Induced Corrosion on Microchip Aluminum Bondpads." In ISTFA 2003. ASM International, 2003. http://dx.doi.org/10.31399/asm.cp.istfa2003p0249.

Full text
Abstract:
Abstract In the authors' previous paper, we studied the defects from Fluorine-Induced Corrosion on microchip Al bondpads using SEM, EDX, TEM, AES, IC, XPS and TOF-SIMS techniques. An unknown F-Al compound was found and identified as [AlF6]3-. In this paper, we will further study the chemical mechanisms of Fluorine-Induced Corrosion on microchip Al bondpads and propose a theoretical electrochemical model to reveal the secrets of Fluorine-Induced Corrosion on Al bondpads. To support this new theoretical model, we will provide substantiating data from TOFSIMS analysis and other failure analysis techniques. According to the theoretical model of Fluorine-induced Corrosion proposed, fluorine contamination on Al bondpads will cause two types of corrosions. First, fluorine reacts with Al and forms a complex compound [AlF6]3- on the affected area, which we will refer to as Fluorine Corrosion. Once the compound of [AlF6]3- forms on Al bondpads, it will form an Anode and cause further electrochemical reactions from O2, N2 and H2O (moisture) at the Cathode. The new products of further electrochemical reactions will be [OH]- and [NH4]+ ions. The new product of [OH]- ions will react with Al and cause further Al corrosion on bondpads and form corrosive product consisting of Al(OH)3, which we will refer to as [OH]- Corrosion. The new product of [NH4]+ ions will combine with [AlF6]3- and form a corrosive complex compound (NH4)3(AlF6). This proposed corrosion mechanism results in non-stick bondpad problem.
APA, Harvard, Vancouver, ISO, and other styles
4

Rajendran, Raj, Tiruvannamalai Rajendra Prasad Tamilarasan, Veeramalai Palaniappan Balaji, and Venugopal Azhagarsamy. "Corrosion and Corrosive Wear of Steel for Automotive Exhaust Application." In International Conference on Advances in Design, Materials, Manufacturing and Surface Engineering for Mobility. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2019. http://dx.doi.org/10.4271/2019-28-0178.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Suzuki, Y., M. Ueyama, M. Sagara, and H. Amaya. "Mechanical and Corrosion Performance of Corrosion Resistant Alloy Tubing after Long Term Use in Corrosive Gas Well." In Abu Dhabi International Petroleum Exhibition & Conference. Society of Petroleum Engineers, 2017. http://dx.doi.org/10.2118/188521-ms.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

Pitt, B. J. A. "Tank Lining & Protection of Ballast Spaces Using Epoxy Paints Under Adverse Weather Conditions." In Marine Corrosion Prevention. RINA, 1994. http://dx.doi.org/10.3940/rina.marco.1994.15.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Benoit, J. "Preventing Corrosion of Dedicated Water Ballast Tanks On All Ships, and Cargo Holds On Bulk Carriers: Prospects For Current and Future Classification Society Rules and International Regulations." In Marine Corrosion Prevention. RINA, 1994. http://dx.doi.org/10.3940/rina.marco.1994.14.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Schunke, U. "History and Recent Developments In Semi-Hard Coatings Used For Protecting Ships' Ballast Tanks." In Marine Corrosion Prevention. RINA, 1994. http://dx.doi.org/10.3940/rina.marco.1994.7.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Fuller, G. H. "Looking Back To The Future." In Marine Corrosion Prevention. RINA, 1994. http://dx.doi.org/10.3940/rina.marco.1994.9.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Friar, D. E. "A New Concept In Corrosion Protection For Ships Hulls." In Marine Corrosion Prevention. RINA, 1994. http://dx.doi.org/10.3940/rina.marco.1994.1.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Corrosione"

1

Soriano Somarriba, Edgar Oscary, and Mark D. Bowman. Pack Rust: Mitigation Strategy Effectiveness. Purdue University, 2022. http://dx.doi.org/10.5703/1288284317373.

Full text
Abstract:
As of 2013, the damage caused by corrosion on highway bridges has been estimated to cost approximately 14 billion dollars annually, and this cost has been increasing over the years. Corrosion is one of the natural phenomena that has been slowly deteriorating infrastructure systems across the United States. One of the most problematic types of corrosion is crevice corrosion, which is defined as the formation of rust between overlapping surfaces, such as the case of a splice connection where flanges are attached by splice plates. A significant number of steel bridges in Indiana have developed crevice corrosion in splice connections. Therefore, this research focuses on the crevice corrosion, or “pack rust,” occurring in these structural elements. The application of coatings alone has not been enough to stop pack rust at these connections. In an attempt to look for approaches that can effectively mitigate this problem and maintain the designed service life of bridges, different strategies have been studied and tested. It was found that the proper use of penetrating sealers can be effective in delaying the development of further corrosion, while the use of caulk alone may be problematic as a repair method.
APA, Harvard, Vancouver, ISO, and other styles
2

Moser, Robert, Preet Singh, Lawrence Kahn, Kimberly Kurtis, David González Niño, and Zackery McClelland. Crevice corrosion and environmentally assisted cracking of high-strength duplex stainless steels in simulated concrete pore solutions. Engineer Research and Development Center (U.S.), August 2021. http://dx.doi.org/10.21079/11681/41620.

Full text
Abstract:
This paper presents a study of crevice corrosion and environmentally assisted cracking (EAC) mechanisms in UNS S32205 and S32304 which were cold drawn to tensile strengths of approximately 1300 MPa. The study utilized a combination of electrochemical methods and slow strain rate testing to evaluate EAC susceptibility. UNS S32205 was not susceptible to crevice corrosion in stranded geometries at Cl⁻ concentrations up to 1.0 M in alkaline and carbonated simulated concrete pore solutions. UNS S32304 did exhibit a reduction in corrosion resistance when tested in a stranded geometry. UNS S32205 and S32304 were not susceptible to stress corrosion cracking at Cl⁻ concentrations up to 0.5 M in alkaline and carbonated solutions but were susceptible to hydrogen embrittlement with cathodic overprotection.
APA, Harvard, Vancouver, ISO, and other styles
3

Edwards, Lulu, Charles Weiss, J. Newman, Fred Nichols, L. Coffing, and Quint Mason. Corrosion and performance of dust palliatives : laboratory and field studies. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/42125.

Full text
Abstract:
This report details laboratory and field experiments on BioPreferred® dust suppressants to assess performance and corrosion characteristics. Numerous bio-based dust suppressant products are marketed, but little data are available to assess performance for dust abatement and corrosion of common metals. A laboratory study used an air impingement device and the Portable In-Situ Wind ERosion Laboratory (PI-SWERL) to simulate wind speeds similar to those in field conditions for rotary wing aircraft. Laboratory corrosion studies used metal coupons imbedded in soil treated with dust palliative. Field trials were conducted using ground vehicle traffic to minimize cost and lower safety concerns while increasing surface wear from repetitive traffic. These studies clearly show that bio-based products demonstrate low corrosion potential with similar dust abatement performance to synthetic-based agents.
APA, Harvard, Vancouver, ISO, and other styles
4

Gombeda, Matthew, Estevan Rivera, and Zoe Lallas. Optimal Approach for Addressing Reinforcement Corrosion for Concrete Bridge Decks in Illinois. Illinois Center for Transportation, April 2022. http://dx.doi.org/10.36501/0197-9191/22-005.

Full text
Abstract:
This report presents the results of a comprehensive literature review focusing on corrosion performance of reinforced concrete bridge decks, with a particular emphasis on the relative performance of alternative corrosion-resistant reinforcement types. Examples of alternative corrosion-protection options examined herein include epoxy-coated, galvanized, stainless-steel, and A1035 bars, considering conventional black reinforcing bars as the standard. Based upon the results of the literature review, a framework for determining the optimal reinforcement option for a bridge deck is presented as a function of the properties of each reinforcement type and other factors, such as design service life, location of the bridge, estimated maintenance/repair cycles, and relative costs. Several examples are also provided to demonstrate the procedure for using the framework and its applicability for different bridge types with varying design considerations, such as a congested urban artery and a rural interstate. The literature review findings and the optimal approach framework were crafted for use by bridge design engineers as preliminary guidance when determining the type of reinforcement for a given bridge deck and its corresponding conditions. Furthermore, the approach can also be used by Illinois Department of Transportation officials when deciding whether to invest in higher performing corrosion-protection systems for a given application or for updating current bridge design policies to reflect the latest developments in alternative corrosion-resistant reinforcement options.
APA, Harvard, Vancouver, ISO, and other styles
5

F. Hua and K. Mon. General Corrosion and Localized Corrosion of the Drip Shield. Office of Scientific and Technical Information (OSTI), June 2003. http://dx.doi.org/10.2172/836516.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

F. Hua. General Corrosion and Localized Corrosion of the Drip Shield. Office of Scientific and Technical Information (OSTI), September 2004. http://dx.doi.org/10.2172/839519.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Dr. Russ Braunling. Corrosion Monitoring System. Office of Scientific and Technical Information (OSTI), October 2004. http://dx.doi.org/10.2172/881266.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Stoner, Debra L. Corrosion Control Climatology. Fort Belvoir, VA: Defense Technical Information Center, October 1988. http://dx.doi.org/10.21236/ada202477.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Duque, Juan, and Joshua Narlesky. GRING18 Corrosion Characterization. Office of Scientific and Technical Information (OSTI), February 2021. http://dx.doi.org/10.2172/1764186.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Lee, Eun U., and Henry C. Sanders. Corrosion Preventive Compounds for Corrosion Prevention/Mitigation (Aermet 100 Steel). Fort Belvoir, VA: Defense Technical Information Center, January 2003. http://dx.doi.org/10.21236/ada410911.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Corrosione' for particular source types:
Journal articles Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography