Pub Date : 2023-05-10DOI: 10.1080/1478422X.2023.2209962
Hong Chen, Xufeng Wang, Guixiang Chang
ABSTRACT A micro-arc oxidised (MAO) protective coating was formed onto AZ31B magnesium alloy samples which were then loaded into ‘C' rings to apply compressive and tensile stresses. The influence of these applied stresses on the protective ability of the coating in simulated body fluid was assessed by surface characterisation and electrochemical testing. It was found that the undulating surface and pore structure of the MAO ceramic coatings was affected by the stress during immersion with a greater number of closed pores under compression and more open pores, with additional cracks, under tension. During the earlier stages of immersion, compressive stresses enhanced the corrosion resistance whilst tensile stresses accelerated corrosion. However, at later stages of immersion both compressive and tensile stress caused enhanced corrosion with tensile stresses consistently worse than compressive stresses.
{"title":"Influence of applied stress on the corrosion resistance of micro-arc oxide coatings on AZ31B magnesium alloy","authors":"Hong Chen, Xufeng Wang, Guixiang Chang","doi":"10.1080/1478422X.2023.2209962","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2209962","url":null,"abstract":"ABSTRACT A micro-arc oxidised (MAO) protective coating was formed onto AZ31B magnesium alloy samples which were then loaded into ‘C' rings to apply compressive and tensile stresses. The influence of these applied stresses on the protective ability of the coating in simulated body fluid was assessed by surface characterisation and electrochemical testing. It was found that the undulating surface and pore structure of the MAO ceramic coatings was affected by the stress during immersion with a greater number of closed pores under compression and more open pores, with additional cracks, under tension. During the earlier stages of immersion, compressive stresses enhanced the corrosion resistance whilst tensile stresses accelerated corrosion. However, at later stages of immersion both compressive and tensile stress caused enhanced corrosion with tensile stresses consistently worse than compressive stresses.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"482 - 491"},"PeriodicalIF":1.8,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48163825","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-03DOI: 10.1080/1478422X.2023.2204260
Nnabuk Okon Eddy, A. Odiongenyi, E. Ebenso, R. Garg, Rishav Garg
ABSTRACT Current successes recorded in the use of plant leaves as corrosion inhibitors have been globally admitted as one of the best options. Little attention is paid to the future implication or risks concerning food insecurity, economic challenges and competition in various sectors that employ plants as their raw materials. This study reviewed the potential of plant wastes (such as peels, rinds and other components) as alternative sources of sustainable corrosion inhibitors. The review reveals that through the considerations of experimental and quantum chemical data as well as their chemical constituents, most plant wastes have excellent corrosion inhibition capacity. Those tested and confirmed as good corrosion inhibitors have also been reviewed. Computational chemistry has been implemented to demonstrate how some challenges confronting the understanding of their inhibition mechanism can be resolved.
{"title":"Plant wastes as alternative sources of sustainable and green corrosion inhibitors in different environments","authors":"Nnabuk Okon Eddy, A. Odiongenyi, E. Ebenso, R. Garg, Rishav Garg","doi":"10.1080/1478422X.2023.2204260","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2204260","url":null,"abstract":"ABSTRACT Current successes recorded in the use of plant leaves as corrosion inhibitors have been globally admitted as one of the best options. Little attention is paid to the future implication or risks concerning food insecurity, economic challenges and competition in various sectors that employ plants as their raw materials. This study reviewed the potential of plant wastes (such as peels, rinds and other components) as alternative sources of sustainable corrosion inhibitors. The review reveals that through the considerations of experimental and quantum chemical data as well as their chemical constituents, most plant wastes have excellent corrosion inhibition capacity. Those tested and confirmed as good corrosion inhibitors have also been reviewed. Computational chemistry has been implemented to demonstrate how some challenges confronting the understanding of their inhibition mechanism can be resolved.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"521 - 533"},"PeriodicalIF":1.8,"publicationDate":"2023-05-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44012202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-26DOI: 10.1080/1478422X.2023.2200008
Michael R. Gruber, B. Hofko, M. Hoffmann, David Stinglmayr, H. Grothe
ABSTRACT Deicing agents in winter maintenance are critical in providing safe roads at all times. Sodium chloride (SC) is the most common, efficient and favourable agent but has a drawback of high corrosiveness, thus substantially shortening the service life of metal-based transport infrastructures. This work focuses on corrosion and addresses approaches for the following corrosion test methods that quantify the mass loss of metals for different deicing agents: standardised neutral salt spray test (ISO 9227), salt solution immersion test (ASTM G31-72) and alternate immersion test (ISO 11130). A wide range of different deicing agents with and without corrosion inhibitors are tested on unalloyed steel, and an analytical and visual comparison is made. Results reveal a substantially reduced corrosion effect at reasonable costs by selecting the appropriate deicing agent with or without corrosion inhibitors. For the final selection of deicers, deicing performance and cost-effectiveness are compared.
{"title":"Analysis of metal corrosion methods and identification of cost-efficient and low corrosion deicing agents","authors":"Michael R. Gruber, B. Hofko, M. Hoffmann, David Stinglmayr, H. Grothe","doi":"10.1080/1478422X.2023.2200008","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2200008","url":null,"abstract":"ABSTRACT Deicing agents in winter maintenance are critical in providing safe roads at all times. Sodium chloride (SC) is the most common, efficient and favourable agent but has a drawback of high corrosiveness, thus substantially shortening the service life of metal-based transport infrastructures. This work focuses on corrosion and addresses approaches for the following corrosion test methods that quantify the mass loss of metals for different deicing agents: standardised neutral salt spray test (ISO 9227), salt solution immersion test (ASTM G31-72) and alternate immersion test (ISO 11130). A wide range of different deicing agents with and without corrosion inhibitors are tested on unalloyed steel, and an analytical and visual comparison is made. Results reveal a substantially reduced corrosion effect at reasonable costs by selecting the appropriate deicing agent with or without corrosion inhibitors. For the final selection of deicers, deicing performance and cost-effectiveness are compared.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"452 - 463"},"PeriodicalIF":1.8,"publicationDate":"2023-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45789977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-20DOI: 10.1080/1478422X.2023.2202062
Tingyan Gao, Yuqing Wu, Julin Wang
ABSTRACT The mechanism of Cu–Sn–Pb bronze (18.2 wt-% Sn) in a simulated soil solution was examined using optical microscopy, scanning electron microscopy, scanning Kelvin probe, X-ray photoelectron spectroscopy, X-ray diffraction and electrochemical techniques. The findings demonstrated that the α-phase possessed a more negative corrosion potential, and the central annular position was more active owing to the difference in the solid-solution tin content during casting. Cl− was not directly involved in the production of corrosive products in the early stage of corrosion, but it damaged the copper oxide layer and promoted the loss of copper ions. Subsequently, the tin oxide was gradually produced on the surface, and the selective copper dissolution led to abundant tin compounds on the surface.
{"title":"Mechanism of incipient annular corrosion of high-tin bronze in simulated soil solution","authors":"Tingyan Gao, Yuqing Wu, Julin Wang","doi":"10.1080/1478422X.2023.2202062","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2202062","url":null,"abstract":"ABSTRACT The mechanism of Cu–Sn–Pb bronze (18.2 wt-% Sn) in a simulated soil solution was examined using optical microscopy, scanning electron microscopy, scanning Kelvin probe, X-ray photoelectron spectroscopy, X-ray diffraction and electrochemical techniques. The findings demonstrated that the α-phase possessed a more negative corrosion potential, and the central annular position was more active owing to the difference in the solid-solution tin content during casting. Cl− was not directly involved in the production of corrosive products in the early stage of corrosion, but it damaged the copper oxide layer and promoted the loss of copper ions. Subsequently, the tin oxide was gradually produced on the surface, and the selective copper dissolution led to abundant tin compounds on the surface.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"464 - 474"},"PeriodicalIF":1.8,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45396093","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
ABSTRACT The wire beam electrode (WBE) of laser additive manufacturing (LAM) nickel-based alloy was prepared to help study its crevice behaviour and mechanism at different area in the crevice with different size. The results show that the LAM nickel-based alloy with the crevice size of 0.1 and 0.3 mm presents crevice corrosion characteristics at 1 day and 3 days due to the formation of oxygen-concentration cell at the former two cases caused by the difficult migration of oxygen from the outside into the crevice. The corrosion at the middle and inside of the crevice is more serious than the outside, which is reflected by the 29.92% lower contents of O2− at the inside than that at the outside of the crevice. Locally, inter-phase corrosion appears between the uniform nickel-based alloy matrix and the insoluble oxides at the inside of the crevice.
{"title":"Crevice corrosion behaviour and mechanism of laser additive manufacturing nickel-based alloy by using wire beam electrode","authors":"Qinying Wang, Xinyu Tan, Yafei Wu, Xingshou Zhang, Lijin Dong, Huaibei Zheng, Tingyao Liu, Yuchen Xi, Shulin Bai, Huali Zhang, Zhi Zhang","doi":"10.1080/1478422X.2023.2197334","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2197334","url":null,"abstract":"ABSTRACT The wire beam electrode (WBE) of laser additive manufacturing (LAM) nickel-based alloy was prepared to help study its crevice behaviour and mechanism at different area in the crevice with different size. The results show that the LAM nickel-based alloy with the crevice size of 0.1 and 0.3 mm presents crevice corrosion characteristics at 1 day and 3 days due to the formation of oxygen-concentration cell at the former two cases caused by the difficult migration of oxygen from the outside into the crevice. The corrosion at the middle and inside of the crevice is more serious than the outside, which is reflected by the 29.92% lower contents of O2− at the inside than that at the outside of the crevice. Locally, inter-phase corrosion appears between the uniform nickel-based alloy matrix and the insoluble oxides at the inside of the crevice.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"431 - 444"},"PeriodicalIF":1.8,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46590119","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-04-11DOI: 10.1080/1478422X.2023.2198786
B. Qi, Chengze Liu, Jianping Xu, Di Zhang, Jinping Wu, Xiaogang Hu, Yusheng Zhang
ABSTRACT Slow strain rate tensile (SSRT) experiments were applied to comprehensively examine the strain rate susceptibility of the stress corrosion cracking behaviour of commercial Zr702 used in the spent nuclear fuel reprocessing environment. Results revealed that layers formed on Zr702 in boiling HNO3 solutions was composed of monoclinic ZrO2 (m-ZrO2) and tetragonal ZrO2 (t-ZrO2). With strain rates above 10−4 s−1, oxide layers ruptured rapidly, evidenced by the drop down of opened circuit potential (OCP). However, the OCP curve displayed fluctuation with 10−5 s−1 during straining, indicating that oxide layer alternately ruptured and repaired, resulting in the thickening of the oxide layer and increasement of stress corrosion cracking susceptibility.
{"title":"Strain rate susceptibility of stress corrosion cracking for commercial Zr702 used in spent nuclear fuel reprocessing","authors":"B. Qi, Chengze Liu, Jianping Xu, Di Zhang, Jinping Wu, Xiaogang Hu, Yusheng Zhang","doi":"10.1080/1478422X.2023.2198786","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2198786","url":null,"abstract":"ABSTRACT\u0000 Slow strain rate tensile (SSRT) experiments were applied to comprehensively examine the strain rate susceptibility of the stress corrosion cracking behaviour of commercial Zr702 used in the spent nuclear fuel reprocessing environment. Results revealed that layers formed on Zr702 in boiling HNO3 solutions was composed of monoclinic ZrO2 (m-ZrO2) and tetragonal ZrO2 (t-ZrO2). With strain rates above 10−4 s−1, oxide layers ruptured rapidly, evidenced by the drop down of opened circuit potential (OCP). However, the OCP curve displayed fluctuation with 10−5 s−1 during straining, indicating that oxide layer alternately ruptured and repaired, resulting in the thickening of the oxide layer and increasement of stress corrosion cracking susceptibility.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"445 - 451"},"PeriodicalIF":1.8,"publicationDate":"2023-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49139214","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-31DOI: 10.1080/1478422X.2023.2193777
L. Díaz-Ballote, V. Rejón, L. Maldonado, M. Alpuche‐Aviles, E. Vega-Lizama
ABSTRACT Tungsten has unique physical and chemical properties that make it ideal for high-temperature applications. At room temperature, it is being considered for medical applications due to its protection by an oxide/hydroxide film. However, breakdown of the oxide film and tungsten dissolution can have adverse effects on human health. This study investigates the corrosion of tungsten with and without dispersed oxides of rare-earth elements (ThO2, CeO2, and La2O3) in a 3 wt-% NaCl solution using electrochemical techniques. The results suggest that tungsten dissolution occurs after the formation of an oxide film, likely WO3, on the surface of tungsten and dispersed oxide tungsten. La2O3 and CeO2 may decrease the corrosion rate of tungsten, while WThO2/tungsten has similar corrosion rates to tungsten. The study concludes that CeO2 or La2O3 could replace ThO2 in tungsten due to the radioactive nature of Th.
{"title":"Effect of dispersed oxide of cerium, lanthanum and thorium on the corrosion behaviour of tungsten in 3.5 wt-% NaCl solution","authors":"L. Díaz-Ballote, V. Rejón, L. Maldonado, M. Alpuche‐Aviles, E. Vega-Lizama","doi":"10.1080/1478422X.2023.2193777","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2193777","url":null,"abstract":"ABSTRACT Tungsten has unique physical and chemical properties that make it ideal for high-temperature applications. At room temperature, it is being considered for medical applications due to its protection by an oxide/hydroxide film. However, breakdown of the oxide film and tungsten dissolution can have adverse effects on human health. This study investigates the corrosion of tungsten with and without dispersed oxides of rare-earth elements (ThO2, CeO2, and La2O3) in a 3 wt-% NaCl solution using electrochemical techniques. The results suggest that tungsten dissolution occurs after the formation of an oxide film, likely WO3, on the surface of tungsten and dispersed oxide tungsten. La2O3 and CeO2 may decrease the corrosion rate of tungsten, while WThO2/tungsten has similar corrosion rates to tungsten. The study concludes that CeO2 or La2O3 could replace ThO2 in tungsten due to the radioactive nature of Th.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"423 - 430"},"PeriodicalIF":1.8,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41482255","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-28DOI: 10.1080/1478422X.2023.2190442
Gang Li, R. Evitts, M. Boulfiza
ABSTRACT When rebar corrosion parameters are characterised from an electrochemical polarisation curve, the non-uniform rebar surface conditions need to be considered. In this research, a circuit model was developed to simulate the polarisation behaviour of rebar in concrete. It is found that the resistivity of concrete leads to non-uniform potential on the rebar, which causes the polarisation curve of the entire rebar to deviate from the Butler–Volmer kinetics. This, in turn, leads to an overestimation of the Tafel constants and the corrosion current density. Such deviations are more pronounced with higher concrete resistivity, especially when the active and passive rebar surfaces have a similar area ratio. The study recommends using potentiodynamic scans of representative reinforced concrete samples of the field conditions or the calculated parameters using an averaging technique, such as the proposed circuit model, to obtain accurate E-I curves or parameters for electrochemical modelling and corrosion rate prediction.
{"title":"The impact of non-uniformity and resistivity on the homogenised corrosion parameters of rebars in concrete – a circuit model analysis","authors":"Gang Li, R. Evitts, M. Boulfiza","doi":"10.1080/1478422X.2023.2190442","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2190442","url":null,"abstract":"ABSTRACT When rebar corrosion parameters are characterised from an electrochemical polarisation curve, the non-uniform rebar surface conditions need to be considered. In this research, a circuit model was developed to simulate the polarisation behaviour of rebar in concrete. It is found that the resistivity of concrete leads to non-uniform potential on the rebar, which causes the polarisation curve of the entire rebar to deviate from the Butler–Volmer kinetics. This, in turn, leads to an overestimation of the Tafel constants and the corrosion current density. Such deviations are more pronounced with higher concrete resistivity, especially when the active and passive rebar surfaces have a similar area ratio. The study recommends using potentiodynamic scans of representative reinforced concrete samples of the field conditions or the calculated parameters using an averaging technique, such as the proposed circuit model, to obtain accurate E-I curves or parameters for electrochemical modelling and corrosion rate prediction.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"399 - 409"},"PeriodicalIF":1.8,"publicationDate":"2023-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44734035","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-03-27DOI: 10.1080/1478422X.2023.2190441
Farzin Arjmand, Yuting Zhang, Z. Zhao, K. Guan
ABSTRACT According to the literature data graphene oxide cannot be easily used as an anti-corrosion barrier on metals and alloys, especially on carbon steel. This article shows that the oxidised form of graphene can improve the electrochemical corrosion parameters of carbon steel, if necessary modifications on the surface structure and wettability of steel are made prior to the coating step. In this study, the effects of surface roughness and hydrophilicity of carbon steel on the anti-corrosion performance of the electrophoretically deposited graphene oxide were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The results showed that increasing the roughness and hydrophilicity of the bare steel surface promotes the mechanical interlocking/adhesion between the graphene oxide and steel and this improves the protective performance of the deposited graphene oxide barrier on steel.
{"title":"Graphene oxide as an anti-corrosion coating on carbon steel: effect of surface structure and wettability of steel","authors":"Farzin Arjmand, Yuting Zhang, Z. Zhao, K. Guan","doi":"10.1080/1478422X.2023.2190441","DOIUrl":"https://doi.org/10.1080/1478422X.2023.2190441","url":null,"abstract":"ABSTRACT According to the literature data graphene oxide cannot be easily used as an anti-corrosion barrier on metals and alloys, especially on carbon steel. This article shows that the oxidised form of graphene can improve the electrochemical corrosion parameters of carbon steel, if necessary modifications on the surface structure and wettability of steel are made prior to the coating step. In this study, the effects of surface roughness and hydrophilicity of carbon steel on the anti-corrosion performance of the electrophoretically deposited graphene oxide were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy. The results showed that increasing the roughness and hydrophilicity of the bare steel surface promotes the mechanical interlocking/adhesion between the graphene oxide and steel and this improves the protective performance of the deposited graphene oxide barrier on steel.","PeriodicalId":10711,"journal":{"name":"Corrosion Engineering, Science and Technology","volume":"58 1","pages":"384 - 398"},"PeriodicalIF":1.8,"publicationDate":"2023-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48274998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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