Thematische Bibliographien / Nail corrosion / Dissertationen
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Dissertationen zum Thema „Nail corrosion“

Autor: Grafiati
Veröffentlicht am 4. Juni 2021
Zuletzt aktualisiert am 20. Februar 2023

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1

McGeachie, M. T., University of Western Sydney, College of Law and Business, and of Construction Property and Planning School. "Characterisation of the Sydney region in relation to corrosion, timber decay risk factors and the corrosion of nails in timber in covered conditions." THESIS_CLAB_CPP_McGeachie_M.xml, 2001. http://handle.uws.edu.au:8081/1959.7/491.

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The aim of the study was to characterise the environment in the Sydney region in respect of atmospheric corrosivity, timber decay risk factors and the corrosion of nails in timber in covered conditions. The study reviewed contemporary research in this field, particularly in Australia, developing an understanding of the durability failure mechanisms for timber and nails in timber. The study looked at the effects of climatic aspects, pollutants, corrosion on timber decay risk factors. The study found that the levels of risk in terms of timber degradation, corrosion and nail corrosion were greate
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Wenk, Christine. "Household scale arsenic removal from drinking water with zero-valent iron corrosion products and performance of Kanchan-type iron nail filters with different synthetic groundwaters /." Zürich : ETHZ, Swiss Federal Institute of Technology Zürich, Department of Environmental Sciences, 2008. http://e-collection.ethbib.ethz.ch/show?type=dipl&nr=421.

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3

Sampaio, Nilo Antonio de Souza [UNESP]. "Estudo da corrosão das ligas Ni-Cr-Mo para próteses dentárias fixas em solução aquosa de NaF 0,05% , NaCl 0,05% e em colutórios comerciais." Universidade Estadual Paulista (UNESP), 2011. http://hdl.handle.net/11449/103736.

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Made available in DSpace on 2014-06-11T19:32:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-11-25Bitstream added on 2014-06-13T19:03:30Z : No. of bitstreams: 1 sampaio_nas_dr_guara.pdf: 3261856 bytes, checksum: 1cec5dd1be792fc77fe196fcf0103c70 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>As ligas Ni-Cr-Mo têm sido usadas como próteses dentárias por possuírem boa resistência mecânica, elevada resistência à corrosão e também por serem economicamente viáveis. A proteção contra a corrosão destas ligas em soluções salinas típicas de meios fisiológicos
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Sampaio, Nilo Antonio de Souza. "Estudo da corrosão das ligas Ni-Cr-Mo para próteses dentárias fixas em solução aquosa de NaF 0,05% , NaCl 0,05% e em colutórios comerciais /." Guaratinguetá : [s.n.], 2011. http://hdl.handle.net/11449/103736.

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Resumo: As ligas Ni-Cr-Mo têm sido usadas como próteses dentárias por possuírem boa resistência mecânica, elevada resistência à corrosão e também por serem economicamente viáveis. A proteção contra a corrosão destas ligas em soluções salinas típicas de meios fisiológicos é devida ao fenômeno de passivação com a formação de uma camada superficial de óxidos, principalmente óxidos de cromo. Este filme protetor submetido a esforços mecânicos num ambiente corrosivo pode se romper parcialmente liberando íons que apresentam efeitos deletérios no corpo humano. Íons fluoreto existentes em produtos de h
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Cerra, Florez Mauro Andrés. "Estudo comparativo da resistência à corrosão entre aços alto manganês e o aço 9% níquel em soluções aquosas de H2SO4 e NaCl." reponame:Repositório Institucional da UFC, 2017. http://www.repositorio.ufc.br/handle/riufc/25624.

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CERRA FLOREZ, M. A. Estudo comparativo da resistência à corrosão entre aços alto manganês e o aço 9% níquel em soluções aquosas de H2SO4 e NaCl. 2017. 108 f. Dissertação (Mestrado em Ciência de Materiais)–Centro de Tecnologia, Universidade Federal do Ceará, Fortaleza, 2017.<br>Submitted by Marlene Sousa (mmarlene@ufc.br) on 2017-09-13T13:08:35Z No. of bitstreams: 1 2017_dis_macerraflorez.pdf: 7059370 bytes, checksum: 037d39ae844a1b60cbe1183a10902438 (MD5)<br>Approved for entry into archive by Marlene Sousa (mmarlene@ufc.br) on 2017-09-13T13:09:44Z (GMT) No. of bitstreams: 1 2017_dis_macerraflo
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Oliveira, Mariana Cristina de. "Efeito da deformação plástica na corrosão do aço API 5L X65 em solução ácida de NaCl." Universidade Estadual Paulista (UNESP), 2018. http://hdl.handle.net/11449/155949.

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Jesus, Antonio Carlos Neto de. "Estudo dos parâmetros: teor de NaCl e acabamento superficial, na resistência à corrosão localizada e generalizada em tubos de cobre." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/85/85134/tde-07102011-140611/.

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Tubos de cobre fabricados com o material ASTM C12200 (99,9%Cu-0,015-0,040%P) são utilizados mundialmente no transporte de água potável. A maior causa de vazamentos nestas tubulações é a corrosão por pite, que usualmente estão relacionadas com a qualidade da água. Estudos recentes mostraram que vazamentos em tubos de cobre usados para transporte de água de rede pública ocorreram em decorrência da corrosão por pite, o que se deu em virtude da presença do íon cloreto originado do tratamento para a desinfecção da água. Outro parâmetro que pode influenciar a corrosão por pite é a condição de acabam
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Strandheim, Espen Oldeide. "AC Induced Corrosion of Carbon Steel in 3.5wt% NaCl Electrolyte." Thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for materialteknologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-19589.

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This paper deals with alternating current (AC) corrosion of low alloy carbon steel in 3.5 wt% NaCl electrolyte. Accelerated corrosion rates have been reported when exposed to AC and the corrosion mechanism is not well understood. Electrical heating of subsea pipelines, applied to avoid hydrate formation and waxing of multiphase hydrocarbon well streams has made this topic increasingly relevant in recent years. To study the effect of AC on corrosion rates, weight loss experiments under a wide range of experimental conditions were performed. Results show that AC strongly influence corrosion kine
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Lin, Huang. "Atmospheric Corrosion of Ag and Cu with Ozone, UV and NaCl." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1357309228.

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Petit, Luc. "Etude de la corrosion d'alliages de fer et de nickel par les mélanges Na2SO4, Na2CO3, NaCl et Na2CO3, Na2S, Na2SO4, NaCl entre 300oC et 900oC : application aux chaudières de récupération (procédé KRAFT)." Grenoble INPG, 1986. http://www.theses.fr/1986INPG0119.

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Etude de la corrosion en milieu de sels fondus (melanges na::(2)so::(4), na::(2)co::(3), nacl et na::(2)co::(3), na::(2)s, na::(2)so::(4), nacl) pour des temperatures comprises entre 300**(o)c et 900**(o)c d'alliages de nickel (in800, in600. . . ) et d'aciers inoxydables (z6cn1810, z12cn25-20. . . ). Mesure des variations de masse et examen des produits formes. Influence d'un traitement de surface. Influence de la composition de l'alliage. Mecanisme de corrosion
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Berthier, Fabienne. "Spectroscopie d'impédance et vitesse de corrosion : application au cas de la corrosion du zinc en milieu NaCl 3%." Grenoble INPG, 1989. http://www.theses.fr/1989INPG0009.

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Onye, Jermain Eze. "Atmospheric Corrosion of Zn by NaCl, SO2, NH3, O3, and UV Light." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1408822401.

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McGeachie, Mark Thomas. "Characterisation of the Sydney region in relation to corrosion, timber decay risk factors and the corrosion of nails in timber in covered conditions /." View thesis View thesis, 2001. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030326.082457/index.html.

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NETO, de JESUS ANTONIO C. "Estudo dos parâmetros: teor de NaCl e acabamento superficial, na resistência à corrosão por PITE em tubos de cobre." reponame:Repositório Institucional do IPEN, 2008. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11614.

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Figuet, Dewis. "Relations entre structures, comportements à la corrosion et propriétés tribologiques des revêtements de NiW." Thesis, La Rochelle, 2020. http://www.theses.fr/2020LAROS026.

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Ces travaux de recherche s’inscrivent dans la continuité des travaux menés au LaSIE sur l’élaboration d’alliages de NiW avec pour objectif de comprendre les relations entre paramètres métallurgiques et propriétés fonctionnelles. L’électrodéposition permet d’obtenir des alliages de NiW de composition variant de 0 à 20 at.% constitués d’une solution solide Ni (W). L’addition de W conduit à un affinement notable de la taille de grains mais plusieurs autres caractéristiques microstructurales sont également modifiées. Deux techniques de dépôts sont utilisées afin d’obtenir des alliages à iso-teneur
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Berthaud, Maxime. "Étude du comportement de l'alliage de titane Ti6242S à haute température sous atmosphères complexes : applications aéronautiques." Thesis, Bourgogne Franche-Comté, 2018. http://www.theses.fr/2018UBFCK035/document.

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L’utilisation des alliages de titane dans de nombreuses applications (transport, énergie, chimie,...) permet des gains de masse importants en tirant profit du rapport propriétés mécaniques/masse volumique qui est avantageux pour ce type de matériaux. L’utilisation de ces alliages dans des environnements à hautes températures (T&gt;500°C) nécessite de se préoccuper de leur comportement et de comprendre les mécanismes de dégradation dans ces conditions sévères. Certains facteurs peuvent influencer le comportement des alliages de titane en oxydation, comme l’application de cycles de chauffage/ref
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Scholant, Camila Monteiro. "Efeito inibidor do tungstato de sódio e da amoxicilina em solução e em filmes de acetato de celulose na corrosão da liga de aço-carbono AISI 1020 em NaCl 0,05 mol/L." Universidade Federal do Pampa, 2014. http://dspace.unipampa.edu.br:8080/xmlui/handle/riu/768.

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Tsaur, Charng-Cheng. "High temperature oxidation and NaCl-induced accelerated corrosion of hot-dip aluminized 9Cr-1Mo and 310 stainless steel." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1375.

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The behaviors of high temperature corrosion on hot-dip aluminized on 9Cr-1Mo and 310 stainless steels when catalyzed by NaCl and cyclic heating environment were studied experimentally. The corrosion behavior and morphological development were investigated by weight gain kinetics, metallographs, depths of attack, metal losses, and X-ray analyses. The results of 310SS deposited with salt mixtures show that weight gain kinetics in simple oxidation reveals a steady-state parabolic rate law after 3 hr, while the kinetics with salt deposits display multi-stage growth rates. NaCl is the main corrosiv
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Chen, Zhuo Yuan. "The role of particles on initial atmospheric corrosion of copper and zinc : lateral distribution, secondary spreading and CO2-/SO2-influence." Doctoral thesis, KTH, Korrosionslära, 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-431.

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The role of sodium chloride (NaCl) particles and ammonium sulfate ((NH4)2SO4) particles on the initial atmospheric corrosion of copper and zinc was investigated under in situ and ex situ conditions using microgravimetry, FTIR spectroscopy, ion chromatography, scanning electron microscopy with x-ray microanalysis and the scanning Kelvin probe. For the first time, in situ infrared spectra were collected on a micron level during particle induced atmospheric corrosion using a recently developed experimental set-up for in situ FTIR microspectroscopy. Lateral distribution of corrosion and reaction p
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Reffass, Mohammed. "La corrosion localisée des aciers en milieu NaHCO3/NaCl et son inhibition par les ions HPO42 et NO2 : rôle des composés à base de Fe(II)." La Rochelle, 2006. http://www.theses.fr/2006LAROS164.

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L’objet de ce travail est de comprendre les mécanismes de corrosion par piqûres d’un acier faiblement allié (S235) dans une solution aqueuse aérée de NaHCO3/NaCl et d’étudier l’effet de deux inhibiteurs de corrosion (HPO42- et NO2-) sur la résistance à la piqûration de l’acier. La Piqûration de l’acier a été étudiée en couplant des mesures électrochimiques et des analyses spectroscopiques. Un suivi in situ de l’activité électrochimique des piqûres, a été réalisé par imagerie électrochimique à électrode vibrante (SVET). La microspectroscopie Raman a permis d’identifier puis de suivre, in situ,
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Sancy, Velasquez Mamie Odette. "Etude de la corrosion du cuivre en milieu 0,1 M NaCl et de la capacité inhibitrice de phtalocyanines tetra-sulphonées." Paris 6, 2006. https://tel.archives-ouvertes.fr/tel-01596357.

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Oliveira, Mariana Cristina de 1991. "Efeito da deformação plástica na corrosão do aço API 5L X65 em solução ácida de NaCl /." Guaratinguetá, 2018. http://hdl.handle.net/11449/155949.

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Orientador: Eduardo Norberto Codaro<br>Coorientadora: Heloisa Andréa Acciari<br>Banca: Roberto Zenhei Nakazato<br>Banca: Rosinei Batista Ribeiro<br>Resumo: O objetivo deste trabalho foi investigar a influência da deformação plástica no comportamento corrosivo de oleodutos em ambiente ácido contendo cloreto de sódio. As tubulações trabalham em ambiente altamente corrosivo e estão sujeitas à deformação plástica, o que altera as propriedades mecânicas do aço. Com isso é necessário avaliar a integridade da tubulação em serviço. Para tanto retirou-se amostras de uma tubulação do aço de baixo carbon
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Liang, Dong. "Environmental and Alloying Effects on Corrosion of Metals and Alloys." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1243995273.

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Villagran, Olivera Víctor Andrés Eduardo. "Estudio de la corrosión de acero al carbono en soluciones salinas de Nacl y el efecto de la hidrodinámica." Tesis, Universidad de Chile, 2012. http://www.repositorio.uchile.cl/handle/2250/112046.

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Ingeniero Civil Químico<br>Este estudio consistió en determinar el efecto de la hidrodinámica en la corrosión de acero al carbono en soluciones con concentraciones de NaCl en el rango 0,01-0,1 M. Para esto se fabricó una celda en acrílico en la cual se colocó una placa de acero rectangular. La forma triangular del canal de la celda permite tener un gradiente de velocidades sobre la placa de acero. Se realizó un estudio cualitativo fotografiando las placas rectangulares de acero antes y después de ser corroídas. Se utilizó SEM-EDS para el análisis de la superficie del acero sin corroer y despué
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Petit, Luc. "Etude de la corrosion d'alliages de fer et de nickel par les mélanges NaSO,NaCO,NaCl et NaCO,NaS,NaSO,NaCl entre 300 °C et 900 ° application aux chaudières de récupération (procédé KRAFT) /." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37619457t.

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Mathias, Cathy. "Examination of interactions between ferrous metals and the archaeological burial environment at a seventeenth-century plantation site." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape10/PQDD_0025/MQ42481.pdf.

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Najjar, Denis. "Compétition entre les mécanismes de dissolution anodique et de fragilisation par l'hydrogène dans le processus de fissuration par corrosion sous contrainte de l'alliage Al-Zn-Mg-Cu 7150 sollicité en traction lente en milieu chlorure (NaCl 3)." Lille 1, 1994. http://www.theses.fr/1994LIL10098.

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Les alliages d'aluminium alznmg(cu) de la serie 7000 utilises dans l'industrie aeronautique ont fait l'objet de nombreuses etudes en corrosion sous contrainte (csc). Neanmoins, le mecanisme de fissuration est toujours sujet a controverses: dissolution anodique et fragilisation par l'hydrogene sont souvent proposes de maniere mutuellement exclusive. Le principal objectif de ce travail est de faire la part des choses entre ces deux grandes familles de mecanismes lors de la fissuration par csc de l'alliage 7150 sollicite en traction lente en milieu chlorure (nacl 3%). En couplant des essais mecan
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Kravetz, André Silvestre. "Estudo da curva de polarização cí­clica da liga de níquel Inconel 625 em solução de NaCl." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-17072018-134630/.

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As curvas de polarização potenciodinâmicas cíclicas da liga de níquel Inconel 625, em solução de NaCl 3,56 %, pH 7,5, desaerada e a temperatura ambiente, obtidas com base na metodologia descrita na norma ASTM G61, foram estudadas com o objetivo de interpretá-las, especialmente no trecho após a reversão da polarização. Para esse estudo, foram realizadas análises complementares por MEV/EDS e por espctroscopia Raman da superfície do eletrodo de trabalho e determinação qualitativa por EDS da composição do eletrólito coletado nas vizinhas do eletrodo de trabalho. Medidas de pH e determinação do teo
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Trachli, Bouchra. "Étude sur la corrosion du cuivre en milieu NaCl 0,5M et sa protection par des inhibiteurs organiques et des films polymères obtenus par électropolymérisation." Paris 6, 2001. http://www.theses.fr/2001PA066484.

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Aguiar, Aloysio de. "A influencia do teor de silicio na corrosão localizada das ligas AL-Si em solução de NaCl 3,0%." [s.n.], 1988. http://repositorio.unicamp.br/jspui/handle/REPOSIP/267179.

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Orientador: Ettore Bresciane Filho<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Campinas<br>Made available in DSpace on 2018-07-14T00:55:29Z (GMT). No. of bitstreams: 1 Aguiar_Aloysiode_M.pdf: 3427772 bytes, checksum: 8a3a851a6c7bb3f3699ed99c6776ab2e (MD5) Previous issue date: 1988<br>Resumo: No presente trabalho foi estudada a influência do teor de silício na corrosão das ligas alumínio-silícíc em soluções de NaCl 3,01. As ligas, com concentrações de silício dc 4,8%, 11,3% e 22,0%, foram obtidas com alumínio e silício com graus de pureza 99, 75%
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Xavier, Marco Antonio Kresko. "Revestimentos de polianilina e polianilina/melamina sobre aço inox 304: eletrossíntese em meio aquoso neutro e avaliação da proteção contra corrosão em meio NaCl 0,5 mol/l." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/876.

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A polianilina é dos polímeros condutores mais estudados e com diversas aplicações, dentre elas o uso no recobrimento de aços para proteção à corrosão. Este trabalho objetivou encontrar as condições de eletrossíntese de polianilinas em meio aquoso neutro e a avaliação de proteção à corrosão, tendo como substrato o aço inox 304. As polianilinas eletrossintetizadas foram uma forma pura (PAni) e outra modificada com a adição de melamina (PAni/MM). Dentre as justificativas deste trabalho está a necessidade de aprofundar os escassos estudos em eletrossínteses em meio aquoso neutro. Neste trabalho, s
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Candido, Luiz Claudio. "Comportamento do aco inoxidavel ABNT 304 a corrosao-sob-tensao em solucoes aquosas neutras de nacl a temperatura de ebulicao utilizando a tecnica de carga constante." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 1987. http://hdl.handle.net/10183/2418.

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Estudou-se o comportamento do aço inoxidável ABNT 304 à corrosão-sob-tensão (C.S.T.) em soluções aquosas com 0,1%, 3,5% e 20% de NaCl, na temperatura de 103°C, através de ensaios de carga constante. Com auxílio das técnicas e conceitos de Mecânica de Fratura Linear Elástica e das análises eletroquímicas procurou-se encontrar as condições em que ocorre C.S.T. no sistema aço inoxidável austenítico/solução aquosa de NaCl a 103°C. Utilizou-se o corpo-de-prova do tipo dupla viga em balanço (T-notch double cantilever beam: TN-DCB), com intuito de observar a influência do fator de intensidade de tens
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Dutra, Conceição Aparecida Matsumoto [UNESP]. "Estudo do comportamento eletroquímico e da resistência à corrosão de eletrodepósitos de zinco e ligas de zinco em solução de NaCL e na presença de oxi-ânions do grupo VIB." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/103755.

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Made available in DSpace on 2014-06-11T19:32:50Z (GMT). No. of bitstreams: 0 Previous issue date: 2010-10-22Bitstream added on 2014-06-13T19:06:58Z : No. of bitstreams: 1 dutra_cam_dr_guara.pdf: 4819005 bytes, checksum: 73e78233a4fdf5d98fd8f747070d5fdc (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>Os revestimentos de zinco são os mais amplamente utilizados na proteção do aço contra a corrosão. Atualmente, estes vêm sendo substituídos por ligas, como o Zn- Ni, pois têm revelado melhores propriedades mecânicas, maior resistência à corrosão quando comparados ao
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Picaud, Thierry. "Application des mesures d'impédance électrochimique à l'étude des performances vis-à-vis de la corrosion en milieu NaCl 3% de tôles d'acier, prétraitées ou non, peintes." Toulouse, INPT, 1986. http://www.theses.fr/1986INPT032G.

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Etude par des mesures electrochimiques d'impedance de l'influence des traitements de surface (phosphatation) et des revetements de peinture sur la resistance a la corrosion de toles d'acier en milieu salin. Determination d'une hierarchie de tenue a la corrosion en fonction du type de phosphatation (zinc ou fer)
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Picaud, Thierry. "Application des mesures d'impédance électrochimique à l'étude des performances vis-à-vis de la corrosion en mileu NaCl 3% de tôles d'acier, prétraitées ou non, peintes." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37608827j.

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Dutra, Conceição Aparecida Matsumoto. "Estudo do comportamento eletroquímico e da resistência à corrosão de eletrodepósitos de zinco e ligas de zinco em solução de NaCL e na presença de oxi-ânions do grupo VIB /." Guaratinguetá : [s.n.], 2010. http://hdl.handle.net/11449/103755.

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Resumo: Os revestimentos de zinco são os mais amplamente utilizados na proteção do aço contra a corrosão. Atualmente, estes vêm sendo substituídos por ligas, como o Zn- Ni, pois têm revelado melhores propriedades mecânicas, maior resistência à corrosão quando comparados aos revestimentos de zinco de mesma espessura, além de poderem ser aplicados em temperaturas mais elevadas. Outros revestimentos de ligas de zinco formados com elementos do grupo VIIIB têm se mostrado promissores por apresentarem propriedades semelhantes e protegerem o aço por ação galvânica. Neste trabalho, eletrodepósitos de
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Klok, Simone Maria. "Avaliação da supersaturação na formação da camada de FeCO3 no processo corrosivo do aço carbono em meio de NaCl saturado com CO2." reponame:Repositório Institucional da UFPR, 2017. http://hdl.handle.net/1884/53496.

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Orientador: Prof. Dr. Haroldo de Araújo Ponte<br>Tese (doutorado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduação em Engenharia e Ciência dos Materiais - PIPE. Defesa: Curitiba, 18/09/2017<br>Inclui referências : f. 122-126<br>Área de concentração: Engenharia e ciência de materiais<br>Resumo: O aço carbono é amplamente empregado na exploração, produção e escoamento de gás e petróleo. Porém, é suscetível à corrosão por dióxido de carbono. Sob condições específicas, pode ocorrer a formação e o depósito de um produto de corrosão, o carbonato de ferro (FeCO3), que
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Silva, Fernando Nunes da. "Desgaste corrosivo-cavitativo-erosivo de um a?o-carbono em meio aquoso com fra??es de sal (NaCl), CO2 e particulados s?lidos (SiO2)." Universidade Federal do Rio Grande do Norte, 2012. http://repositorio.ufrn.br:8080/jspui/handle/123456789/15699.

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Made available in DSpace on 2014-12-17T14:58:19Z (GMT). No. of bitstreams: 1 FernandoNS_DISSERT.pdf: 5044327 bytes, checksum: 66e88407297dda873c6a6d882b6de312 (MD5) Previous issue date: 2012-08-27<br>Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico<br>A batch of eighty-four coupons of low carbon steel were investigated at laboratory conditions under a corrosive, cavitative-corrosive (CO2) and corrosive-erosive (SiO2 + CO2) in an aqueous salt solution and two levels of temperature. The following measurements were made on Vickers (HV0,05, HV0,10, HV0,20) Microhardness tests at thr
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ZAID, BACHIR. "Obtention de films de polypyrrole en milieu aqueux ou organique par oxydation electrochimique du pyrrole sur des surfaces de zinc modifiees et evaluation de leurs proprietes anti-corrosion au milieu nacl." Paris 7, 1994. http://www.theses.fr/1994PA077333.

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La reaction d'electropolymerisation du pyrrole sur electrode de zinc a ete realisee en milieux aqueux et organiques: soit en traitant le metal (par le sulfure de sodium ou par des heteropolyanions), soit en incorporant dans le milieu reactionnel un sel capable de passiver partiellement le metal sans inhiber la reaction d'electropolymerisation. Le traitement par les heteropolyanions s'est revele efficace pour l'electropolymerisation du pyrrole dans le milieu propylene carbonate + tetraethyleammonium-paratoluene-sulfonate, mais inefficace en milieu aqueux. Le traitement par le sulfure de sodium
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Clark, Tad Dee. "An Analysis of Microstructure and Corrosion Resistance in Underwater Friction Stir Welded 304L Stainless Steel." Diss., BYU ScholarsArchive, 2005. http://contentdm.lib.byu.edu/ETD/image/etd872.pdf.

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Nery, Macclarck Pessoa. "Efeito da tensão média e frequência na resistência a fadiga e corrosão-fadiga de parafusos prisioneiros de aço inoxidável AISI 304." Pós-Graduação em Ciência e Engenharia de Materiais, 2018. http://ri.ufs.br/jspui/handle/riufs/7284.

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The use of bolts as an element of union has a great importance in industrial situations that need frequent assembling and disassembly. In the present study, the effect of the mean stress and frequency on the fatigue of screw bolts made from cold-formed threaded bars was evaluated. The bolts was made with austenitic stainless steel, AISI 304, and it were tested in two different environments, air and 35g/L NaCl aqueous solution. Initially, tensile testing, chemical analysis, microstructural analysis, x-ray diffraction and hardness were did by the metallurgical characterization. The fatigue tests
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Al, Bacha Serge. "Générateur d’Hydrogène « vert » pour mobilité légère ou de courte distance Hydrogen generation via hydrolysis of ball milled WE43 magnesium waste Hydrogen generation from ball milled Mg alloy waste by hydrolysis reaction Effect of ball milling strategy (milling device for scaling-up) on the hydrolysis performance of Mg alloy waste Effect of ball milling in presence of additives (Graphite, AlCl3, MgCl2 and NaCl) on the hydrolysis performances of Mg17Al12 Corrosion of pure and milled Mg17Al12 in “model” seawater solution Mechanism of hydrogen formation during the corrosion of Mg17Al12 Hydrolysis properties, corrosion behavior and microhardness of AZ91 "model" alloys SECM investigation of galvanic coupling between Mg and Mg17Al12 in AZ alloys Valorization of AZ91 by the hydrolysis reaction for hydrogen production (Electrochemical approach) Clean hydrogen production by the hydrolysis of Magnesium-based material: effect of the hydrolysis solution." Thesis, Bordeaux, 2020. http://www.theses.fr/2020BORD0312.

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L’hydrolyse des déchets d’alliages de magnésium dans l’eau de mer (i.e. solution aqueuse à 3,5% en masse de NaCl) est une nouvelle approche qui permet à la fois la production de l’hydrogène in-situ et la valorisation de déchets a priori non recyclables. L’objectif de ce travail de thèse est d’optimiser la réactivité de ces déchets par broyage mécanique en présence d’additif(s). Nous avons donc investigué les principaux paramètres de broyage (e.g. atmosphère de broyage, vitesse de broyage, ordre d’ajout des additifs) sur la réactivité d’un alliage WE43 et des déchets d’alliages Mg–Al. Un « scal
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Valencia, Violeta. "Electrochemical Characterization Of Zinc-Rich Epoxy Primer-Cnt Nanocoating / Steel Interface In Co2 Saturated Under Different Flow Conditions." University of Akron / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=akron1431108599.

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Yan, Ting-Syuan, and 顏婷萱. "Evaluation of Heat-treated Wood on the Performances of Nail Corrosion, Adhesion, and Coating." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/58392614431548455076.

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碩士<br>國立宜蘭大學<br>森林暨自然資源學系碩士班<br>101<br>The first part of this study was to investigate the corrosion properties of five kinds metal nail connected with heat-treated Japanese cedar, southern yellow pine, and Douglas fir during 37 weeks of outdoor exposure test. The heat treatments were carried out at temperature levels of 170, 190, 210, and 230℃, respectively. The other part was to investigate the difference of surface and strength properties between heat-treated and untreated hoop pine, Douglas fir, American ash, and red meranti wood. The performance of adhesion was evaluated using urea-forald
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McGeachie, M. T. "Characterisation of the Sydney region in relation to corrosion, timber decay risk factors and the corrosion of nails in timber in covered conditions." Thesis, 2001. http://handle.uws.edu.au:8081/1959.7/491.

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The aim of the study was to characterise the environment in the Sydney region in respect of atmospheric corrosivity, timber decay risk factors and the corrosion of nails in timber in covered conditions. The study reviewed contemporary research in this field, particularly in Australia, developing an understanding of the durability failure mechanisms for timber and nails in timber. The study looked at the effects of climatic aspects, pollutants, corrosion on timber decay risk factors. The study found that the levels of risk in terms of timber degradation, corrosion and nail corrosion were greate
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Ma, hsi-chang, and 馬錫章. "The 3.5%NaCl Aqueous Corrosion of Fe-based Alloys After Hot Corrosion with pre-coating NaCl/Na2SO4 Mixtures." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/77005925651458949779.

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碩士<br>國立臺灣科技大學<br>工程技術研究所材料科技學程<br>88<br>The room-temperature corrosion behavior of three Fe-Cr alloys(containing SB450 and STPA24, and STPA26) was studied in 3.5% NaCl aqueous electrolyte after hot corrosion with 2mg/cm2 NaCl/Na2SO4 deposit at 750℃ and 850℃. The aqueous-corrosion mechanism was evaluated in terms of scale morphology by OM and SEM, XRD, and dynamic polarization curve measurements. The results showed that the higher the Cr content the lower icorr and the higher Ecorr values of the alloy which tends to be more noble. STPA 26 has the best corrosion-resistant ability
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孫稟厚. "Corrosion behavior of Al-Sc alloys in 3.5wt% NaCl solution." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/64238258490963313139.

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碩士<br>中華大學<br>機械與航太工程研究所<br>95<br>AbstractThe corrosion behavior of aluminum alloys alloyed with Sc after different heat treatment has been reported in a 3.5% NaCl aqueous solution by using electrochemical method. The surface morphology of the corroded samples was investigated by a scanning electron microscope. Experimental results showed that micro harduess of the Al-Sc alloy was 206.8Hv after a precipitation heat treatment (homogenized at 480℃ for 24h and aged at 100℃ for 24h), due to the presence of Al3Sc precipitates. The precipitates are also affect the corrosion behavior of the alloy.
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Rong-SinLin and 林榮信. "Corrosion behavior of copper-containing carbon steels in NaCl solution." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/29067094217870965790.

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碩士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>101<br>The corrosion behavior of Cu-containing carbon steels in various acidity 3.5 wt% NaCl solution was investigated. By immersion test to calculated the weight loss. The properties of electrochemical corrosion behavior were obtained from potentiodynamic polarization curves and electrochemical impedance spectroscopy. The corrosion products’ crystal structure and chemical bonding energy after potentiostat testing obtained from the X-ray diffraction and X-ray photoelectron spectroscope. The immersion test showed that the weight loss of SS400 steel was h
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Lin, Chien Shing, and 林建勝. "Hot Corrosion of Fe-Ni-Cr Alloys Caused by NaCl Deposits." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/84080028990499032508.

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碩士<br>國立臺灣科技大學<br>機械工程研究所<br>84<br>The purpose of this study is to investigate the NaCl-induced hot corrosion performances and mechanism of the Fe-Ni-Cr alloys which were studied by means of T.G.A, metal loss and internal penetration methods. The results show that NaCl-induced hot corrosion of Fe-Ni-Cr alloys were influenced by reaction temperature and the chromium- and nickel-contents. Chloridation was the major reaction when the reaction temperature was above the
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fu-fu, peng, and 彭富福. "The High Temperature Corrosion of 2205 Duplex Stainless Steel with NaCl Deposit." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/83618937000182316392.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>92<br>Abstract The objective of this study is to figure out the hot corrosion behavior of 2205 duplex stainless steel (2205 DSS) within the temperature range from 550 to 850℃ in the static air condition with 2mg/cm2 NaCl deposit , and in the air atmospheres condition with a constant flow rate of 500vppm NaCl(g) respectively. Experimental results show that the hot corrosion kinetics met the parabolic rate law and the corrosion rate increased constantly with increasing temperature. The scales formed included Fe2O3/Fe3O4/Cr2O3 and FeCr2O4 from out
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