Relevant bibliographies by topics / Alternate immersion corrosion testing

Contents

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

Academic literature on the topic 'Alternate immersion corrosion testing'

Author: Grafiati
Published: 4 June 2021
Last updated: 9 February 2022

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 'Alternate immersion corrosion testing.'

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 "Alternate immersion corrosion testing"

1

Qian, Yuhai, Jingjun Xu, and Meishuan Li. "An accelerated testing method for the evaluation of atmospheric corrosion resistance of weathering steels." Anti-Corrosion Methods and Materials 62, no. 2 (March 2, 2015): 77–82. http://dx.doi.org/10.1108/acmm-11-2013-1319.

Full text
Abstract:
Purpose – The purpose of this paper is to present a laboratory accelerated periodic immersion wet/dry cyclic corrosion test, reflecting the alternate wet/dry process during the atmospheric exposure of metallic materials, which can be applied to evaluate the atmospheric corrosion resistance (ACR) of weathering steels in a very short period. Design/methodology/approach – This test method uses 0.01 M sodium bisulfite aqueous solution with pH 4.4 as the immersion medium, simulating the notable characteristics of sulfur dioxide pollutant in industrially polluted atmospheres. During the test process, the tested specimens are immersed into the solution for 12 minutes, immediately followed by the subsequent drying process for 48 minutes, and such alternate process consists of a cyclic period, i.e. 1 hour. As a result of this procedure, a relative corrosion rate is defined to determine the ACR. To determine a preferred test period, different test periods including 72 and 200 hours were compared. Findings – Compared with several other commonly used test methods, it was confirmed that the relative ACR of various steels can be determined after testing for only 72 hours. The constituent of the corrosion products, i.e. the rust layer, was consistent with that formed after long-term exposure in a typical outdoor atmospheric environment. Originality/value – The test method enables comparative testing for ranking the ACR of weathering steel during the development of new weathering steels.
APA, Harvard, Vancouver, ISO, and other styles
2

Guérin, Mathilde, Eric Andrieu, Grégory Odemer, Joël Alexis, and Christine Blanc. "Effect of the Microstructure and Environmental Exposure Conditions on the Corrosion Behaviour of the 2050 Alloy." Materials Science Forum 794-796 (June 2014): 205–10. http://dx.doi.org/10.4028/www.scientific.net/msf.794-796.205.

Full text
Abstract:
Alternate immersion-emersion tests were performed for a 2050 aluminium alloy to characterize its corrosion resistance with exposure conditions representative of in service-conditions. Tests were performed for T34 samples and aged samples. After continuous immersion tests, T34 samples exhibited intergranular corrosion while intragranular corrosion was observed for aged samples. The alternate immersion-emersion tests led to a corrosion extension to the subgrain boundaries, for both T34 and aged samples, as shown by electron backscattered diffraction analysis.
APA, Harvard, Vancouver, ISO, and other styles
3

Jones, D. A., R. K. Blitz, and I. Hodjati. "Alternate Immersion Testing of Coated Sheet Steel." CORROSION 42, no. 5 (May 1986): 255–62. http://dx.doi.org/10.5006/1.3584901.

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

Lin, Zhen, Guo Zhang Li, Hong Bai Bai, and Chun Hong Lu. "Experimental Investigation on Damping Characteristic of Metal Rubber Material at Simulated Marine Environment." Applied Mechanics and Materials 456 (October 2013): 110–14. http://dx.doi.org/10.4028/www.scientific.net/amm.456.110.

Full text
Abstract:
To meet the need of damping material at the marine corrosive environment, the clamped-edge disk type of metal rubber specimen is designed and its corrosion-load alternate experiment is performed, the anti-corrosive and damping characteristic of the material at the marine corrosive environment is researched. The experimental results show that the corrosive rate of 304 stainless steel metal rubber specimen at cycle-immersion corrosion-load alternate environment is the highest and its decay rate of dynamic average rigidity is also the highest, and followed by full-immersion, cycle-salt-spray and full-salt-spray environment. The damping characteristic of metal rubber specimen is relatively stable at the corrosion-load alternate experiment; the metal rubber material has anti-corrosion ability at marine environment.
APA, Harvard, Vancouver, ISO, and other styles
5

Gong, Lihua, Weimin Guo, and Feng Pan. "The corrosion behavior of marine aluminum alloy MIG welded joints in a simulated tropical marine atmosphere." Materials Testing 63, no. 2 (February 1, 2021): 151–56. http://dx.doi.org/10.1515/mt-2020-0027.

Full text
Abstract:
Abstract The influence of metal inert-gas arc welding (MIG) on the corrosion behavior of 6061-T6 aluminum alloy in a simulated tropical marine atmospheric environment (related to high temperature, high humidity and high salt spray) were examined by dry-wet alternate immersion corrosion tests. The equivalent conversion was used to design the accelerated test time. The results show that in the initial stage, the intermetallic compound, rich in Fe, Si and Cu, had little influence on corrosion resistance in the heat-affected zone. For a corrosion time of 3 days in a tropical marine atmospheric environment, the corrosion rate of the welded joint increased rapidly, even reaching 3.5 times that of the base metal. Though the corrosion products had significant impact on slowing down the corrosion rate, as with the base metal, the corrosion rate of the welded joint was nearly double that of the base metal during the longest cycle period involving alternate immersion corrosion tests for 20 days.
APA, Harvard, Vancouver, ISO, and other styles
6

Nikolov, Nikolay, Veselin Tsonev, Kamen Penkov, Nikola Kuzmanov, and Boris Borisov. "Machine for accelerated cyclic corrosion tests through alternate immersion in salt solution." IOP Conference Series: Materials Science and Engineering 664 (October 29, 2019): 012016. http://dx.doi.org/10.1088/1757-899x/664/1/012016.

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

Tsonev, Veselin, Nikolay Nikolov, Kamen Penkov, and Yordanka Marcheva. "Simulation of steel rod atmospheric corrosion by alternate immersion in salt solution." IOP Conference Series: Materials Science and Engineering 1002 (December 4, 2020): 012008. http://dx.doi.org/10.1088/1757-899x/1002/1/012008.

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

Cheng, Xuequn, and Xiao Mei Zuo. "Study on electrochemical behavior of 690 alloy with corrosion products in simulated PWR primary water environment." Anti-Corrosion Methods and Materials 65, no. 6 (November 5, 2018): 616–25. http://dx.doi.org/10.1108/acmm-07-2018-1961.

Full text
Abstract:
Purpose The purpose of this paper is to study the electrochemical behavior of 690 alloy with corrosion products in simulated pressurized water reactor (PWR) primary water environment. Design/methodology/approach This paper opted for a laboratory study using simulation of high temperature and high pressure environment immersion testing. The electrochemical behavior was studied by potentiodynamic polarization, electrochemical impedance spectroscopy, scanning Kelvin probe microscopy (SKP). Moreover, the corrosion products were analyzed by X-ray photoelectron spectroscopy. Findings The results demonstrated that the particle majority in the 690 alloy corrosion products subsequent to high temperature and high pressure immersion testing were mainly oxides of Fe and Ni, which protected the matrix. As the immersion testing duration increased, the corrosion potential of the 690 alloy apparently increased, and the corrosion current density de'creased, while the corrosion resistance Rf increased gradually along with the density. The SKP demonstrated that the EKP increased by nearly 400 mV from −0.42 to −0.03 V following the immersion testing, indicating that the corrosion product film played an apparent protective role on the substrate. Originality/value This paper provides a theoretical basis for the corrosion behavior and inhibition mechanism of 690 alloy in PWR primary water environment.
APA, Harvard, Vancouver, ISO, and other styles
9

Gao, Zhigang, Yuting He, Sheng Zhang, Tianyu Zhang, and Fei Yang. "Research on Corrosion Damage Evolution of Aluminum Alloy for Aviation." Applied Sciences 10, no. 20 (October 15, 2020): 7184. http://dx.doi.org/10.3390/app10207184.

Full text
Abstract:
Based on the real annual average value of atmospheric environmental data in the Wanning area of Hainan Province in China by selecting 7075 ultra-high-strength aluminum alloy specimens for aviation, a new corrosion solution was designed and the traditional alternate immersion corrosion method of using the alternate immersion corrosion test box was improved to simulate the environment of the internal structure of the aircraft. On this basis, two kinds of corrosion damage parameters, the depth of corrosion pits and corrosion rate, were quickly and accurately obtained by the three-dimensional profile of the specimen and binarization images’ method. The optimal linear regression equation combination of pitting depth and corrosion rate was established, and the dynamic evolution equation of the depth of corrosion pits and corrosion rate was obtained. The results showed that: The depth of corrosion pits in the early stage of corrosion (8 h and 24 h) obeyed the Gumbel distribution and Weibull distribution, respectively, and the later stage (48 h, 72 h, 96 h, and 120 h) conformed to the normal distribution; the depth of corrosion pits’ evolution law was in the form of double straight lines and the corrosion rate evolution law was in the power function form (y = a × xb); and the depth of corrosion pits changed rapidly in the early stage and gradually slowed down in the later stage, while the corrosion rate was just the opposite.
APA, Harvard, Vancouver, ISO, and other styles
10

Tong, Hui, Wen Li Han, Zhong Ping Xu, Yan Jun Zhang, Zhu Lin, and Shi Cheng Wei. "Study on Corrosion Process of Al-Mg Coatings Based on Electrochemical Impedance Spectroscopy." Key Engineering Materials 744 (July 2017): 380–84. http://dx.doi.org/10.4028/www.scientific.net/kem.744.380.

Full text
Abstract:
Electrochemical impedance spectroscopy (EIS) is a technology of nondestructive electrochemical testing. In this paper, EIS is applied to study the corrosion processes of Al-Mg coatings. In the initial 24 h of immersion in 3.5% NaCl solution, passive films of Al-Mg coatings dissolve quickly. As time passed, corrosion products increase on surface gradually, which can inhibit corrosion. After 480h of immersion, corrosion products fully cover on Al-Mg coatings’ surface. The EIS of different corrosion processes are fitted by three equivalent circuits corresponding to the three corrosion processes. In the test of open circuit potentials (OCP), OCP is instable in the initial 24 h of immersion. As immersion time goes by, OCP tends to stabilization at about -0.90 V. Measurements of scanning electron microscope (SEM) confirm the conclusions of electrochemical measurements.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Alternate immersion corrosion testing"

1

Gunter, Cameron Cornelius. "Feasibility of Friction Stir Processing (FSP) as a Method of Healing Cracks in Irradiated 304L Stainless Steels." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6111.

Full text
Abstract:
The current US fleet of nuclear reactors has been in service for three decades. Over this period, existing welds in stainless steel (SS) shrouds have sustained stress corrosion cracking (SCC) and are in need of repair. Additionally, helium has formed interstitially as a byproduct of proton bombardment. Current repair technology, such as TIG welding, puts extreme amounts of heat into the material and allows for interstitial helium atoms to aggregate and form bubbles/voids at grain boundaries. This significantly weakens the material, proving to be a very counterproductive and ineffective repair technique. Much study has been done on friction stir processing (FSP), but none has explored it as an enabling repair technology for use in nuclear applications. Because of its relatively low energy input as a solid state joining technology, it is proposed that FSP could effectively heal SCCs in these existing welds without the negative side effect of helium bubble formation. A spread of speeds and feeds were initially tested using a PCBN-W-Re tool on 304L SS. Six of these parameter sets were selected as representations of high, medium, and low temperature-per-power outputs for this research: 2 IPM-80 RPM, 2 IPM-150 RPM, 4 IPM-150 RPM, 4 IPM-250 RPM, 6 IPM-125 RPM, and 6 IPM-175 RPM. These varied parameter sets were tested for their tensile, micro-hardness, and corrosion resistant properties. In general, the lower IPM and RPM values resulted in higher ultimate tensile strengths (UTS). Higher IPM and RPM values resulted in tunnel, pin hole, and surface void defects. These defects caused premature failure in tensile tests and could often be identified through microscopy. Micro-hardness testing demonstrated a strong correlation per the Hall-Petch relationship – finer grain sizes resulted in higher yield strength (hardness values) of the material. The tool temperature during FSP was a good indicator of the expected hardness – lower temperatures resulted in higher hardness values. Corrosion testing was performed with a 1000-hour alternate immersion test in a room temperature 3.5% NaCl solution. With these testing parameters, the results demonstrated that FSP had no effect on the corrosion resistance of 304L SS under these conditions.
APA, Harvard, Vancouver, ISO, and other styles
2

Kivisäkk, Ulf. "Corrosion testing of heat exchanger tubing." Licentiate thesis, KTH, Materials Science and Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-1680.

Full text
Abstract:

Heat exchanger tubes are commonly made from stainless steel.In a heat exchanger both the process fluid and the cooling orheating media can be corrosive. It is therefore important to beable to select materials that do not suffer from corrosion.Current methods in this area, however, suffer from limitationsand shortcomings. This thesis concerns corrosion tests forgeneral corrosion, dewpoint corrosion and stress corrosioncracking, respectively. For evaluation of general corrosion ofsuperduplex stainless steels in hydrochloric acid and sulphuricacid the importance of activation was studied. The results showthat activation has a great influence on the test result.Further the results indicate that experimental differences canbe the explanation for previously reported differences incorrosion resistance of superduplex stainless steel that havebeen attributed to the alloying with Cu and W. Furthermore, asimple test loop for testing stainless steels under dew formingconditions with a formed condensate of 1 % hydrochloric acidhas been developed. In the work constant strain and constantload test result have been compared and the observationsindicate that the differences can be explained by differencesin the relaxation properties of the materials.

Key words:corrosion testing, heat exchanger, stainlesssteel, general corrosion, immersion tests, activation, stresscorrosion cracking, constant load, u-bends, relaxation,dewpoint corrosion

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

Carrick, David. "Investigation of microstructure and corrosion in Al-Cu and Al-Mg alloys with and without Li additions." Thesis, Loughborough University, 2015. https://dspace.lboro.ac.uk/2134/21302.

Full text
Abstract:
The corrosion performance of Al-Cu and Al-Mg alloys with and without Li additions have been investigated. These include; AA2024-T3, AA2099-T8E77 (coarse and fine grain structure), AA5083-T351, spray formed Al-Mg-Li and spray formed Al-Mg-Li-Cu-Zn alloy. Atmospheric corrosion was investigated for up to 12 months of exposure in a rural-urban environment, prolonged immersion testing in 3.5 wt.% NaCl for up to 96 hr s and potentiodynamic polarisation in 3.5 wt.% NaCl were examined. This was to answer whether Li additions, spray forming and grain size impacted on the corrosion resistance. Atmospheric exposure showed Al2(CO3)3, NOx, SOx and NaCl compounds being deposited. Cathodic intermetallic compounds (Fe, Si, Mn and Cu rich) were shown to be associated with pitting corrosion, whereas anodic intermetallic compounds (Mg rich) offered sacrificial protection to the matrix. The Al-Cu alloys showed more corrosion compared to the Al-Mg alloys in all three corrosion investigations. The Al-Cu alloys showed pitting corrosion and intergranular corrosion, compared to primarily pitting corrosion on the Al-Mg alloys. AA2024-T3 developed a weakened, friable layer on the surface, consisting of a network of intergranular corrosion and numerous shallow pits. The Al-Cu-Li alloys also showed intergranular corrosion and pitting corrosion, but also developed selective grain dissolution, leading to extensive sub-surface cavities. This showed that Li additions in the Al-Cu alloys was detrimental and was primarily associated with the T type phases likely to be; T1 phase (Al2CuLi). Li additions in the Al-Mg alloys did not show any measurable improvement or reduction in corrosion resistance. Spray forming also did not appear to improve the corrosion resistance. Grain size in turn was shown to impact on corrosion resistance, with the general consensus being that finer grains offer increased corrosion resistances. Al-Cu alloys showed fine grain structures developed easy path propagation for intergranular corrosion, whereas fine grain structures on Al-Mg alloys promoted increased corrosion resistance.
APA, Harvard, Vancouver, ISO, and other styles
4

Smith, Michael Shane. "SODIUM HYPOCHLORITE'S EFFECT ON NICKEL-TITANIUM ROTARY INSTRUMENTS AND ITS EFFECT ON RESISTANCE TO FRACTURE." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd/941.

Full text
Abstract:
The purpose of this study was to examine the effect of partial and total immersion in sodium hypochlorite on nickel-titanium rotary files and to determine whether resistance to fracture was influenced by the immersion time. One hundred K3™ and 100 ProFile® rotary files were either partially or totally immersed in 5.25% sodium hypochlorite for zero, one, five, thirty, or sixty minutes. After immersion, files were subjected to cyclic fatigue testing. Time to fracture was recorded and analyzed by a two-way ANOVA. Tukey's honest significant difference was used to identify any differences in immersion times. Within all ProFile groups and partial immersion K3 groups, there was no significant decrease in time to fracture with increased immersion time in sodium hypochlorite. Only the K3 total immersion groups revealed a significant decrease in time to fracture with increased immersion time in sodium hypochlorite.
APA, Harvard, Vancouver, ISO, and other styles

Books on the topic "Alternate immersion corrosion testing"

1

Standard test method: Immersion corrosion testing of ceramic materials. Houston: NACE, 1999.

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

Book chapters on the topic "Alternate immersion corrosion testing"

1

Wadsö, Lars, and Dmytro Orlov. "Adding Dimensions to the Immersion Testing of Magnesium Corrosion." In Magnesium Technology 2018, 31–36. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72332-7_7.

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

"Immersion Testing." In Corrosion: Fundamentals, Testing, and Protection, 463–69. ASM International, 2003. http://dx.doi.org/10.31399/asm.hb.v13a.a0003645.

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

Conference papers on the topic "Alternate immersion corrosion testing"

1

Fleck, Jeffrey M., and Kent A. Colgan. "Alternate Repair Criteria for Primary Water Stress Corrosion Cracking." In ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/pvp2006-icpvt-11-93933.

Full text
Abstract:
PWSCC was identified in the early 1990’s within the roll expanded region near the primary tubesheet face in alloy 600 tubes of Once Through Steam Generators. Axial tube end cracks (TECs) located behind the tube-to-tubesheet roll expansion joint are of no structural concern, but nonetheless require repair per plant Technical Specifications. Therefore, there was a need to develop a method of permitting affected tubes to remain in-service. Framatome ANP completed an extensive program that was documented in a topical report and was approved by US NRC (1999) to allow these tubes to remain inservice by accounting for primary to secondary leakage under postulated MSLB conditions. Leakage is calculated following each tube inspection, must remain below site specific limits and is based on test results that applied simulated axial loads and tubesheet bow to a tube/tubesheet mockup and measured the resultant leakage though EDM notches. Testing demonstrated that joint tightness is the key parameter which correlates with leakage. Joint tightness is quantified via “delta dilation,” which depends upon axial tube load, tubesheet deformation, and primary side pressure. Test results were used with plant specific delta dilations to develop bounding leakage estimates for various regions of the tubesheet. The bounding leak rate was assigned to each identified TEC and all were summed to determine the total leak rate. Due to its deterministic nature, and its use of delta dilation values which do not reflect the difference between actual plant axial loads and those employed in the tests, this approach produces excessively conservative results. During recent inspections, the number of TECs has continued to increase and continued initiation is expected in both the hot and cold tube end regions. This, coupled with the conservatisms discussed above, led to increases in the number of tube repair rolls required to meet leakage limits. Consequently, the authors undertook an effort to reduce the conservatisms in the leakage determination process by accounting for the differences in tube loading conditions in the testing (Poisson effect) and by eliminating the deterministic leakage calculation approach. A Monte Carlo code (LeakTEC) was developed to perform the calculations in this manner. This new approach was recently approved by the NRC for use at one of the affected plants.
APA, Harvard, Vancouver, ISO, and other styles
2

Evans, Kenneth J., Marshall L. Stuart, Phillip D. Hailey, and Raul B. Rebak. "Long-Term Immersion Testing of Alloy 22 and Titanium Grade 7 Double U-Bend Specimens." In ASME 2007 Pressure Vessels and Piping Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/pvp2007-26163.

Full text
Abstract:
Double U-bend specimens of Alloy 22 (N06022) and Titanium Grade 7 (R52400) were exposed to a naturally aerated concentrated Basic Saturated Water (BSW) electrolyte at 105°C for over six years. Different type of discoloration of the Ti Gr 7 and Alloy 22 specimens was observed. General Corrosion was minimal and not distinguishable under a scanning electron microscope. None of the tested specimens suffered environmentally assisted cracking (EAC) or localized corrosion under the tested conditions. The specimens retained their residual stress after the long environmental exposure.
APA, Harvard, Vancouver, ISO, and other styles
3

Mills, Douglas J., Joshua Zatland, and Nicola M. Everitt. "Experience Using Electrochemical Noise for Testing Green Corrosion Inhibitors." In SPE International Oilfield Corrosion Conference and Exhibition. SPE, 2021. http://dx.doi.org/10.2118/205475-ms.

Full text
Abstract:
Abstract ‘Green’ corrosion inhibitors derived from plant materials provide environmentally friendly alternatives to conventional corrosion inhibitors. They are also much cheaper if using a biomass waste stream or abundant plant material as the source material. There are many examples in literature of different trials, from henna leaves to celery seeds to banana peel. Although it is known that extracts contain electron-rich polar atoms such as N, O, S and P which make them potentially effective inhibitors, it is difficult to predict on a molecular basis what will work well and what will not, since many interacting factors may be at play in complementary interactions. To assist in predicting the inhibition efficiency of inhibitors under varying conditions and choosing the most effective, what is needed is a short-term test which will obviate the need for tedious weight loss experiments. The Electrochemical Noise Method (ENM) uses the natural fluctuations which arise during electrochemical activity to gain information about the corrosion process. Using ENM is quick and non-intrusive method which makes it ideal for screening. Hence a rig has been designed and manufactured which allows for measurement to be made in stirred as well as static conditions and minimises the occurrence of crevice corrosion at the electrodes. Crevice corrosion is a hazard for ENM electrodes when trying to make a comparison with corrosion inhibition calculated using the standard weight loss measurement after immersion (WLM) method. For these preliminary trials we are exploring corrosion of mild steel in HCl in both stirred and unstirred conditions at room temperature. Results are presented comparing ENM measurements with conventional WLM for both Propargyl Alcohol (a conventional industrial corrosion inhibitor) and broccoli extract. Our results suggest that stirring does not make any difference to the noise measured in ENM. The amount of material lost calculated by ENM and WLM (Rn and weight loss values) can be directly compared and show close comparison. It seems likely that as a way of assessing inhibitors quickly (which is particularly important in the testing of "green" inhibitors) that this ENM approach has a lot to offer.
APA, Harvard, Vancouver, ISO, and other styles
4

Sturgeon, A. J., and D. C. Buxton. "The Electrochemical Corrosion Behavior of HVOF Sprayed Coatings." In ITSC 2000, edited by Christopher C. Berndt. ASM International, 2000. http://dx.doi.org/10.31399/asm.cp.itsc2000p1011.

Full text
Abstract:
Abstract Thermal spraying of corrosion resistant alloys onto low alloy steel substrates has received much attention as a method to protect against corrosion in seawater or corrosive solutions, such as mineral or organic acids. The need to ensure high coating quality with minimal porosity and cracking, and with low oxide levels is best achieved in metallic alloys using the high velocity oxyfuel (HVOF) spraying process. This article investigates the electrochemical corrosion behavior of HVOF sprayed coatings, covering coating preparation and characterization, immersion testing, and electrochemical testing. The discussion provides information on immersion test results, polarization plots for coatings, comparison of corrosion performance, influence of microstructure on corrosion performance, and comparison with bulk alloy materials. The results reported in this article have been selected to demonstrate the use of the cyclic potentiodynamic polarization method to rank the corrosion performance of HVOF sprayed Ni-alloy coatings.
APA, Harvard, Vancouver, ISO, and other styles
5

Maziasz, Philip J., Bruce A. Pint, Robert W. Swindeman, Karren L. More, and Edgar Lara-Curzio. "Selection, Development and Testing of Stainless Steels and Alloys for High-Temperature Recuperator Applications." In ASME Turbo Expo 2003, collocated with the 2003 International Joint Power Generation Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/gt2003-38762.

Full text
Abstract:
Compact recuperators/heat-exchangers are essential hardware that increases the efficiency of microturbines and smaller industrial gas turbines. There are several different kinds of recuperator technology (primary surface, plate and fin, spiral, and others), but they all have several common materials needs. Most commercial recuperators today are made from 347 stainless steel sheet or foil. Increased engine size, higher exhaust temperatures and alternate fuels all require greater performance (strength, corrosion resistance) and reliability than 347 steel, especially as temperatures approach or exceed 750°C. To meet these needs, the Department of Energy (DOE) has sponsored programs at the Oak Ridge National Laboratory (ORNL) to measure properties of commercial sheet and foil materials, to analyze recuperator components, and to identify or develop materials with improved performance and reliability, but which also are cost-effective. This paper summarizes high-temperature creep and corrosion testing of commercial 347 used for current recuperators, testing of HR 120 and modified 803 alloys, and development of modified 347 stainless steels.
APA, Harvard, Vancouver, ISO, and other styles
6

Kursten, Bruno, Frank Druyts, and Pierre Van Iseghem. "Methodology in Corrosion Testing of Container Materials for Radioactive Waste Disposal in a Geological Clay Repository." In ASME 2001 8th International Conference on Radioactive Waste Management and Environmental Remediation. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/icem2001-1237.

Full text
Abstract:
Abstract The current worldwide trend for the final disposal of conditioned high-level, medium-level and long-lived alpha-bearing radioactive waste focuses on deep geological disposal. During the geological disposal, the isolation between the radioactive waste and the environment (biosphere) is realised by the multibarrier principle, which is based on the complementary nature of the various natural and engineered barriers. One of the main engineered barriers is the metallic container (overpack) that encloses the conditioned waste. In Belgium, the Boom Clay sediment is being studied as a potential host rock formation for the final disposal of conditioned high-level radioactive waste (HLW) and spent fuel. Since the mid 1980’s, SCK•CEN has developed an extensive research programme aimed at evaluating the suitability of a wide variety of metallic materials as candidate overpack material for the disposal of HLW. A multiple experimental approach is applied consisting of i) in situ corrosion experiments, ii) electrochemical experiments (cyclic potentiodynamic polarisation measurements and monitoring the evolution of ECORR as a function of time), and iii) immersion experiments. The in situ corrosion experiments were performed in the underground research facility, the High Activity Disposal Experimental Site, or HADES, located in the Boom clay layer at a depth of 225 metres below ground level. These experiments aimed at predicting the long-term corrosion behaviour of various candidate container materials. It was believed that this could be realised by investigating the medium-term interactions between the container materials and the host formation. These experiments resulted in a change of reasoning at the national authorities concerning the choice of over-pack material from the corrosion-allowance material carbon steel towards corrosion-resistant materials such as stainless steels. The main arguments being the severe pitting corrosion during the aerobic period and the large amount of hydrogen gas generated during the subsequent anaerobic period. The in situ corrosion experiments however, did not allow to unequivocally quantify the corrosion of the various investigated candidate overpack materials. The main shortcoming was that they did not allow to experimentally separate the aerobic and anaerobic phase. This resulted in the elaboration of a new laboratory programme. Electrochemical corrosion experiments were designed to investigate the effect of a wide variety of parameters on the localised corrosion behaviour of candidate overpack materials: temperature, SO42−, Cl−, S2O32−, oxygen content (aerobic - anaerobic),… Three characteristic potentials can be derived from the cyclic potentiodynamic polarisation (CPP) curves: i) the open circuit potential, OCP, ii) the critical potential for pit nucleation, ENP, and iii) the protection potential, EPP. Monitoring the open circuit potential as a function of time in clay slurries, representative for the underground environment, provides us with a more reliable value for the corrosion potential, ECORR, under disposal conditions. The long-term corrosion behaviour of the candidate overpack materials can be established by comparing the value of ECORR relative to ENP and EPP (determined from the CPP-curves). The immersion tests were developed to complement the in situ experiments. These experiments aimed at determining the corrosion rate and to identify the corrosion processes that can occur during the aerobic and anaerobic period of the geological disposal. Also, some experiments were elaborated to study the effect of graphite on the corrosion behaviour of the candidate overpack materials.
APA, Harvard, Vancouver, ISO, and other styles
7

Hackel, Lloyd A., and Jon E. Rankin. "Lifetime Enhancement of Propulsion Shafts Against Corrosion-Fatigue by Laser Peening." In SNAME 15th Propeller and Shafting Symposium. SNAME, 2018. http://dx.doi.org/10.5957/pss-2018-01.

Full text
Abstract:
This paper reports substantially enhanced fatigue and corrosion-fatigue lifetimes of propulsion shaft materials, 23284A steel and 23284A steel with In625 weld overlay cladding, as a result of shot or laser peening. Glass reinforced plastic (GRP) coatings and Inconel claddings are used to protect shafts against general corrosion and corrosion pitting. However salt water leakage penetrating under a GRP can actually enhance pitting leading to crack initiation and growth. Fatigue coupons, untreated and with shot or laser peening were tested, including with simultaneous salt water immersion. Controlled corrosion of the surfaces was simulated with electric discharge machining (EDM) of deep pits enabling evaluation of fatigue and corrosion-fatigue lifetimes. Results specifically show high energy laser peening (HELP) to be a superior solution, improving corrosion-fatigue resistance of shaft and cladding metal, reducing the potential for corrosion pits to initiate fatigue cracks and dramatically slowing crack growth rates. At a heavy loading of 110% of the 23284A steel yield stress and with 0.020 inch deep pits, laser peening increased fatigue life of the steel by 1370% and by 350% in the corrosion-fatigue testing.
APA, Harvard, Vancouver, ISO, and other styles
8

Socariceanu, M., X. An, A. Deighton, and A. Friday. "Corrosion Assessment of Aluminium Conductor for Medium Voltage Cables for Subsea Umbilical System." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-77483.

Full text
Abstract:
High tensile strength aluminum offers great potential as a conductor material for Medium Voltage power cables within subsea umbilicals. Its excellent fatigue performance makes it suitable for dynamic umbilicals and its high tensile strength and light weight make it an ideal candidate for deepwater dynamic umbilicals either as an independent load bearing member or as an electrical conductor taking load share in an armoured or steel tube umbilical. Umbilicals, are the bundles of electrical and hydraulic components that connect and control elements of a subsea Oil and Gas production system. 6000 series aluminum conductors, commonly known as AAAC (All Aluminum Alloy) conductors are widely used on high voltage overhead transmission lines, primarily on long spans due to their increased tensile strength. They have been widely used in various environments and possess an excellent track record. However, the use of AAAC 6000 series in a subsea umbilical system is novel. The cable located inside an umbilical bundle is normally of a wet insulation design, and an area of concern is that the seawater may permeate through the cable insulation allowing the conductor material to be in contact with water throughout its design life. Hence the corrosion resistance of the AAAC 6000 series in a seawater environment is of paramount importance and therefore must be assessed. This paper details the corrosion assessment of the 6000 series aluminum power cable conductor at RINA Consulting Ltd’s laboratories together with complimentary field testing. The presented test results are based on long term (6–12 months) laboratory testing. The test programme investigated permeation, impact of temperature, effect of hydrostatic pressure and galvanic corrosion, with the tests being performed on material coupons and cable samples in a simulated seawater environment. Also detailed is the outcome of a full-scale cable field immersion test, 6 months under 1000m depth at seabed temperature of 10°C. The results demonstrated that there was no Cl− and Na+ ion permeation through the insulation layer. Also, there is no sign of aluminium conductor corrosion and no drop-in insulation resistance witnessed for all tested samples at temperatures up to 90°C and under a high pressure of 300bar after a one year test period, which is sufficient to qualify use in a subsea application. Based on the results of the presented laboratory testing and field immersion testing, it can be concluded that 6000 series aluminium conductors within ‘wet design’ Medium Voltage power cables will not be susceptible to corrosion in a subsea environment and could be used in other applications such as renewables.
APA, Harvard, Vancouver, ISO, and other styles
9

Shailendar, Shiv, and Murali M. Sundaram. "Corrosion Study on Liquid Marble Based Localized Electrochemical Deposition on Cold Rolled Steel." In ASME 2015 International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/msec2015-9497.

Full text
Abstract:
Application of electrochemical methods for micro repair is being researched. A liquid marble is a liquid droplet coated with hydrophobic micro or nano powders. When the liquid used is a suitable electrolyte, it can be used for localized electrochemical deposition (LECD) which is in turn used for micro repair. Though the feasibility of this process is already established, the properties of the deposit with respect to the metal substrate has to be studied. Corrosion is an important property that can vary between two metals. An immersion corrosion test is performed on a substrates having micro spots made using LECD using 5% NaCl for 240 hours. The results are compared with specimens of the same dimension which underwent the same corrosion testing process. It was found that the micro deposits did not affect the corrosion rate significantly and therefore localized electro deposition using liquid marbles may be considered as a potential method for micro repair.
APA, Harvard, Vancouver, ISO, and other styles
10

Wenglarz, Richard A., and Ralph G. Fox. "Chemical Aspects of Deposition/Corrosion From Coal-Water Fuels Under Gas Turbine Conditions." In ASME 1989 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1989. http://dx.doi.org/10.1115/89-gt-207.

Full text
Abstract:
A staged, subscale turbine combustor based on a promising rich-quench-lean combustor approach to reduce NOX emissions was used to evaluate deposition, erosion, and corrosion (DEC) from coal-water fuels (CWF). This combustor was operated with three CWF at conditions of a recuperated turbine. Specimens were exposed in two test sections at temperature conditions of the first stator vanes and first rotor blades of the recuperated turbine. Resulting deposits were chemically analyzed. Deposit covered segments of specimens were placed in a furnace to extend their exposure to the potentially corrosive deposits. The deposits produced at higher temperature first stator conditions differed significantly from those produced at lower temperature first rotor conditions. The rates of formation of the higher temperature deposits were high and the deposit chemistries were similar to the coal ash chemistry. The rates of formation of the lower temperature deposits were one to two orders of magnitude less and deposit chemistries were not the same as the coal ash chemistry. Some corrosion of a CoCrAlY coating was detected after a few hours of exposure in the DEC tests. Corrosion penetration up to one-half of the coating thickness was observed after an additional 460 hr furnace exposure. Much more testing is needed to explore whether the deposition and corrosion produced by the fuels evaluated are typical of this fuel form and to assess benefits of alternate turbine protection measures.
APA, Harvard, Vancouver, ISO, and other styles

Reports on the topic "Alternate immersion corrosion testing"

1

Roy, Ajit. Galvanic corrosion testing using electrochemical and immersion techniques. Office of Scientific and Technical Information (OSTI), July 1996. http://dx.doi.org/10.2172/2647.

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

Williams, M., C. Jantzen, and P. Burket. Corrosion Testing of Monofrax K-3 Refractory in Defense Waste Processing Facility (DWPF) Alternate Reductant Feeds. Office of Scientific and Technical Information (OSTI), April 2016. http://dx.doi.org/10.2172/1250758.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Alternate immersion corrosion testing' for particular source types:
Journal articles
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