Danhong Li, Kun Wang, Xiangying Zhu, Junxiu Chen, Ya Liu, Jianhua Wang, X. Su
The influence of Al content and low oxygen pressure preoxidation on the high‐temperature oxidation resistance of the Ni–25Cr–xAl–1Si–0.5Y (x = 0, 1, 3, 5 wt%) alloys were studied. The formation of oxides in low oxygen pressure preoxidation was investigated. The oxidation behavior of alloys with different Al content at 1000°C with and without preoxidation under low oxygen pressure was discussed. A protective oxide film was formed on the surface of alloys with different Al content in low oxygen pressure pre‐oxidation at 950°C for 5 h, but there were great differences in microstructures and properties. With the increase of Al content, the outermost oxide film of the alloy gradually changed from continuous Cr2O3 to Al2O3, and the oxidation resistance of the alloy increased gradually at 1000°C. By comparison, the oxidation resistance of Ni–25Cr–xAl–1Si–0.5Y (x = 0, 1, 3, 5 wt%) alloys can be significantly improved at 1000°C by low oxygen pressure preoxidation treatment.
{"title":"Influence of Al content and low oxygen pressure preoxidation on high‐temperature oxidation resistance of Ni–25Cr–xAl–1Si–0.5Y alloys","authors":"Danhong Li, Kun Wang, Xiangying Zhu, Junxiu Chen, Ya Liu, Jianhua Wang, X. Su","doi":"10.1002/maco.202213060","DOIUrl":"https://doi.org/10.1002/maco.202213060","url":null,"abstract":"The influence of Al content and low oxygen pressure preoxidation on the high‐temperature oxidation resistance of the Ni–25Cr–xAl–1Si–0.5Y (x = 0, 1, 3, 5 wt%) alloys were studied. The formation of oxides in low oxygen pressure preoxidation was investigated. The oxidation behavior of alloys with different Al content at 1000°C with and without preoxidation under low oxygen pressure was discussed. A protective oxide film was formed on the surface of alloys with different Al content in low oxygen pressure pre‐oxidation at 950°C for 5 h, but there were great differences in microstructures and properties. With the increase of Al content, the outermost oxide film of the alloy gradually changed from continuous Cr2O3 to Al2O3, and the oxidation resistance of the alloy increased gradually at 1000°C. By comparison, the oxidation resistance of Ni–25Cr–xAl–1Si–0.5Y (x = 0, 1, 3, 5 wt%) alloys can be significantly improved at 1000°C by low oxygen pressure preoxidation treatment.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"30 1","pages":"1865 - 1878"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88087844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Andreas Gassner, H. Palkowski, H. Mozaffari-Jovein
In this study, the effect of various normal loads on the dry sliding wear, microstructure evolution, and resulting corrosion behavior of martensitic AISI 420 were investigated. The results revealed adhesion‐dominated wear with material transfer and particles, leading to the formation of a lamellar microstructure containing delamination and pores around partly broken carbides. The microstructure evolution resulted in a significant decrease of the local corrosion resistance in 0.15 M NaCl solution, which was accompanied by a high concentration of corrosion sites within the worn areas. Dissolution inside the wear tracks was concentrated on the deformed microstructure. As the normal load increased, the effects of the wear intensified, further reducing the local corrosion resistance.
研究了不同载荷对马氏体AISI 420干滑动磨损、组织演变及腐蚀行为的影响。结果表明，材料转移和颗粒磨损以粘附为主，导致在部分断裂的碳化物周围形成含脱层和孔隙的层状微观结构。显微组织的演变导致合金在0.15 M NaCl溶液中的局部耐蚀性显著降低，磨损区域内出现了高浓度的腐蚀位点。磨损道内的溶解主要集中在变形组织上。随着正常载荷的增加，磨损的影响加剧，进一步降低了局部耐蚀性。
{"title":"Influence of dry sliding wear on the corrosion behavior of AISI 420","authors":"Andreas Gassner, H. Palkowski, H. Mozaffari-Jovein","doi":"10.1002/maco.202213249","DOIUrl":"https://doi.org/10.1002/maco.202213249","url":null,"abstract":"In this study, the effect of various normal loads on the dry sliding wear, microstructure evolution, and resulting corrosion behavior of martensitic AISI 420 were investigated. The results revealed adhesion‐dominated wear with material transfer and particles, leading to the formation of a lamellar microstructure containing delamination and pores around partly broken carbides. The microstructure evolution resulted in a significant decrease of the local corrosion resistance in 0.15 M NaCl solution, which was accompanied by a high concentration of corrosion sites within the worn areas. Dissolution inside the wear tracks was concentrated on the deformed microstructure. As the normal load increased, the effects of the wear intensified, further reducing the local corrosion resistance.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"13 1","pages":"1844 - 1853"},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81923834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chao Yang, Gonglin Deng, X. Xing, Qing Han, Haibo Liu
Molecular dynamic simulations are applied to test the nickel's modification mechanism of Fe–Ni alloy. Mono displacement loading is applied to a perfect single crystal model, a single crystal model with vacancies, and a model with transgranular crack. Moreover, constant strain load is applied to the polycrystal model to test the Ni effect on intergranular crack initiation. The results elucidate that Ni atoms could decrease the free surface energy and the stacking fault energy simultaneously. However, Ni atoms have a more significant effect on the reduction of stacking fault energy. If the Ni concentration is above 0.03, the transgranular crack constantly emits dislocations under loading, thus, postponing the cleavage cracking. Particularly, as the Ni concentration is above 0.05, the recrystallization process could be a favorable energy‐releasing behavior compared with the intergranular cracking. The findings suggest that a low concentration of Ni might degrade the physical property of Fe–Ni alloy. Increasing the Ni atomic concentration above specific critical values, for example, 0.03 or 0.05, could enhance the fracture toughness.
{"title":"Molecular dynamics study on the effect of Ni atoms on the crack arrest performance of Fe–Ni alloy","authors":"Chao Yang, Gonglin Deng, X. Xing, Qing Han, Haibo Liu","doi":"10.1002/maco.202213229","DOIUrl":"https://doi.org/10.1002/maco.202213229","url":null,"abstract":"Molecular dynamic simulations are applied to test the nickel's modification mechanism of Fe–Ni alloy. Mono displacement loading is applied to a perfect single crystal model, a single crystal model with vacancies, and a model with transgranular crack. Moreover, constant strain load is applied to the polycrystal model to test the Ni effect on intergranular crack initiation. The results elucidate that Ni atoms could decrease the free surface energy and the stacking fault energy simultaneously. However, Ni atoms have a more significant effect on the reduction of stacking fault energy. If the Ni concentration is above 0.03, the transgranular crack constantly emits dislocations under loading, thus, postponing the cleavage cracking. Particularly, as the Ni concentration is above 0.05, the recrystallization process could be a favorable energy‐releasing behavior compared with the intergranular cracking. The findings suggest that a low concentration of Ni might degrade the physical property of Fe–Ni alloy. Increasing the Ni atomic concentration above specific critical values, for example, 0.03 or 0.05, could enhance the fracture toughness.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"15 1","pages":"1879 - 1887"},"PeriodicalIF":0.0,"publicationDate":"2022-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80960268","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. P. Golhin, S. Kamrani, C. Fleck, Alireza Ghasemi
Understanding the role of nanoparticles in magnesium (Mg)‐based materials and protective coating provides valuable information to achieve an optimized combination of mechanical and corrosion protection properties of Mg nanocomposites. The present study investigates the effects of SiC nanoparticles on the corrosion behavior and structure of Mg‐SiC composites substrates coated by plasma electrolytic oxidation (PEO). Moreover, the influence of different volume fractions of SiCn up to 10% on corrosion behavior and galvanic reactions between Mg matrix and SiC particles was also investigated. The morphology, distribution of the phases, and the microstructure of the coating were characterized by SEM, EDAX, X‐ray photoelectron spectroscopy, and XRD. The corrosion resistance of the samples was determined through dynamic polarization and electrochemical impedance spectroscopy tests before and after PEO coating treatment. The results indicate that the Mg nanocomposite with 1 vol% SiCn (M1Sn) coated by PEO coating shows higher corrosion resistance than the samples with a higher percentage of SiCn, as well as the sample without SiCn particles.
{"title":"Corrosion protection of Mg‐SiC nanocomposite through plasma electrolytic oxidation coating process","authors":"A. P. Golhin, S. Kamrani, C. Fleck, Alireza Ghasemi","doi":"10.1002/maco.202213118","DOIUrl":"https://doi.org/10.1002/maco.202213118","url":null,"abstract":"Understanding the role of nanoparticles in magnesium (Mg)‐based materials and protective coating provides valuable information to achieve an optimized combination of mechanical and corrosion protection properties of Mg nanocomposites. The present study investigates the effects of SiC nanoparticles on the corrosion behavior and structure of Mg‐SiC composites substrates coated by plasma electrolytic oxidation (PEO). Moreover, the influence of different volume fractions of SiCn up to 10% on corrosion behavior and galvanic reactions between Mg matrix and SiC particles was also investigated. The morphology, distribution of the phases, and the microstructure of the coating were characterized by SEM, EDAX, X‐ray photoelectron spectroscopy, and XRD. The corrosion resistance of the samples was determined through dynamic polarization and electrochemical impedance spectroscopy tests before and after PEO coating treatment. The results indicate that the Mg nanocomposite with 1 vol% SiCn (M1Sn) coated by PEO coating shows higher corrosion resistance than the samples with a higher percentage of SiCn, as well as the sample without SiCn particles.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"69 1","pages":"1813 - 1825"},"PeriodicalIF":0.0,"publicationDate":"2022-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82807225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
To improve the surface properties of Q235 carbon steels, CrFeMoNiTi(WC)x high‐entropy alloy composite coatings were fabricated via selective laser melting. The microstructure, wear resistance, and corrosion resistance of the composite coatings were studied. Spherical or near‐spherical tungsten carbide (WC) particles are dispersively distributed in the coatings, resulting in the appearance of obvious WC and TiW2C phases. And the composite coatings mainly consist of body‐centered cubic (BCC) and face‐centered cubic (FCC). When x ≤ 0.3, the addition of WC enhances the BCC diffraction peak. Microhardness of the composite coatings with WC increases and is much higher than that of the substrate (280.6 HV0.1). The hardness of the CrFeMoNiTi(WC)0.3 (1005.1 HV0.1) is the highest among the composite coatings. The retained WC particles and BCC acted as load bearers during the friction process, which reduces the wear loss of the composite coating. Also, the anodic protection caused by the corrosion‐resistant WC particles and BCC greatly improves the ability of the composite coatings to resist NaCl attack. Hence, CrFeMoNiTi(WC)0.3 exhibited the optimum wear resistance and corrosion resistance.
{"title":"Effect of WC content on microstructure and properties of CrFeMoNiTi(WC)x high‐entropy alloys composite coatings prepared by selective laser melting","authors":"Desheng Li, Ke Chen, X. Fu, Zixuan Hua","doi":"10.1002/maco.202213228","DOIUrl":"https://doi.org/10.1002/maco.202213228","url":null,"abstract":"To improve the surface properties of Q235 carbon steels, CrFeMoNiTi(WC)x high‐entropy alloy composite coatings were fabricated via selective laser melting. The microstructure, wear resistance, and corrosion resistance of the composite coatings were studied. Spherical or near‐spherical tungsten carbide (WC) particles are dispersively distributed in the coatings, resulting in the appearance of obvious WC and TiW2C phases. And the composite coatings mainly consist of body‐centered cubic (BCC) and face‐centered cubic (FCC). When x ≤ 0.3, the addition of WC enhances the BCC diffraction peak. Microhardness of the composite coatings with WC increases and is much higher than that of the substrate (280.6 HV0.1). The hardness of the CrFeMoNiTi(WC)0.3 (1005.1 HV0.1) is the highest among the composite coatings. The retained WC particles and BCC acted as load bearers during the friction process, which reduces the wear loss of the composite coating. Also, the anodic protection caused by the corrosion‐resistant WC particles and BCC greatly improves the ability of the composite coatings to resist NaCl attack. Hence, CrFeMoNiTi(WC)0.3 exhibited the optimum wear resistance and corrosion resistance.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"93 1","pages":"1676 - 1686"},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73929163","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tobias Holzner, G. Luckeneder, B. Strauß, M. Valtiner
Conversion layers produced on an industrial scale are typically based on phosphates or chromates and involve toxicological and environmental problematic treatment solutions and waste. Concerning this matter, layered double hydroxide (LDH)‐based conversion layers prepared by the process described in our study offer a promising alternative where the treatment solution comes with no environmental or toxicological concerns. The corrosion protection of Zn–Al–Mg (ZM)‐coated steel by an in situ grown LDH conversion layer is investigated by potentiodynamic polarization measurements, linear polarization resistance determination, neutral salt spray test and mass loss test. An LDH layer formation time as short as 30 s considerably improves the corrosion resistance of ZM‐coated steel in electrochemical testing as well as in industrially relevant corrosion testing under chloride‐containing atmospheres. With prolonged LDH formation times, further improvement in corrosion protection is obtained. The significantly increased corrosion resistance of ZM‐coated steel after the industrially feasible treatment time of 30 s makes LDH‐based conversion layers a promising candidate for novel industrially viable conversion layers, with enhanced corrosion performance and environmentally benign as well as sustainable chemistry.
{"title":"Corrosion protection of Zn–Al–Mg‐coated steel by a layered double hydroxide conversion layer","authors":"Tobias Holzner, G. Luckeneder, B. Strauß, M. Valtiner","doi":"10.1002/maco.202213097","DOIUrl":"https://doi.org/10.1002/maco.202213097","url":null,"abstract":"Conversion layers produced on an industrial scale are typically based on phosphates or chromates and involve toxicological and environmental problematic treatment solutions and waste. Concerning this matter, layered double hydroxide (LDH)‐based conversion layers prepared by the process described in our study offer a promising alternative where the treatment solution comes with no environmental or toxicological concerns. The corrosion protection of Zn–Al–Mg (ZM)‐coated steel by an in situ grown LDH conversion layer is investigated by potentiodynamic polarization measurements, linear polarization resistance determination, neutral salt spray test and mass loss test. An LDH layer formation time as short as 30 s considerably improves the corrosion resistance of ZM‐coated steel in electrochemical testing as well as in industrially relevant corrosion testing under chloride‐containing atmospheres. With prolonged LDH formation times, further improvement in corrosion protection is obtained. The significantly increased corrosion resistance of ZM‐coated steel after the industrially feasible treatment time of 30 s makes LDH‐based conversion layers a promising candidate for novel industrially viable conversion layers, with enhanced corrosion performance and environmentally benign as well as sustainable chemistry.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"3 1","pages":"1657 - 1665"},"PeriodicalIF":0.0,"publicationDate":"2022-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88527946","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yuting Wang, P. Han, Funan Sun, Ruizhen Xie, X. Bai, B. He, Xiaoyuan Wang
The corrosion law of X80 steel in silty soils with different contents of sodium chloride and sodium sulfate is studied at different temperatures by using an orthogonal test group of three factors and three levels L9 (34) in conjunction with the results of electrochemical impedance spectroscopy, polarization curve, and microscopic images. The steel corrosion rate increases with the silty soil temperature. The presence of SO42− in silty soil inhibits corrosion in X80 steel. The corrosion mechanism involves competition between Cl− and SO42− for adsorption sites: SO42− ions occupy some corrosion pits, and FeS and other corrosion products are generated and adhere to the surface of the corrosion pits, inhibiting further reaction. A range analysis of the fitted electrochemical impedance spectra and polarization curves of X80 steel shows that the temperature has the strongest effect on the corrosion of X80 steel, followed by the Cl− content, whereas the SO42− content has the least effect. The lowest corrosion rate is found for a silty soil Cl− content of 0.3%, a SO42− content of 2.0%, and a temperature of −20°C.
{"title":"Influence of corrosion behavior of X80 steel in silty soil containing composite sodium salt based on orthogonal test","authors":"Yuting Wang, P. Han, Funan Sun, Ruizhen Xie, X. Bai, B. He, Xiaoyuan Wang","doi":"10.1002/maco.202213150","DOIUrl":"https://doi.org/10.1002/maco.202213150","url":null,"abstract":"The corrosion law of X80 steel in silty soils with different contents of sodium chloride and sodium sulfate is studied at different temperatures by using an orthogonal test group of three factors and three levels L9 (34) in conjunction with the results of electrochemical impedance spectroscopy, polarization curve, and microscopic images. The steel corrosion rate increases with the silty soil temperature. The presence of SO42− in silty soil inhibits corrosion in X80 steel. The corrosion mechanism involves competition between Cl− and SO42− for adsorption sites: SO42− ions occupy some corrosion pits, and FeS and other corrosion products are generated and adhere to the surface of the corrosion pits, inhibiting further reaction. A range analysis of the fitted electrochemical impedance spectra and polarization curves of X80 steel shows that the temperature has the strongest effect on the corrosion of X80 steel, followed by the Cl− content, whereas the SO42− content has the least effect. The lowest corrosion rate is found for a silty soil Cl− content of 0.3%, a SO42− content of 2.0%, and a temperature of −20°C.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"55 1","pages":"1644 - 1656"},"PeriodicalIF":0.0,"publicationDate":"2022-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75208208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A multipass multilayer weld pad was fabricated on AISI 347 base metal with filler combinations of AISI 321 and AISI 347, to understand the role of Ti addition on metallurgical, corrosion, and passive film characteristics of the AISI 347 weld. Weld layers with Nb content of 0.53 wt.%, 0.47 wt.%, 0.23 wt.% and Ti of 0 wt.%, 0.21 wt.%, 0.33 wt.%, respectively, were extracted from fabricated weld pad. Selected weld metal compositions were subjected to thermal aging at 750°C for 24 h to investigate the influence of varying precipitation induced in these welds. Ti addition in AISI 347 weld showed lower enrichment of C and Cr at dendritic regions resulting in reduced Cr depletion, lower sensitization, enhanced pitting potential, and repassivation ability compared to conventional Nb stabilized AISI 347 weld. Passive film characteristics studied by electrochemical impedance spectroscopy and X‐ray photoelectron spectroscopy depicted formation of more protective, and dense passive film with higher Cr, Ni, and O concentrations for Ti added AISI 347 weld relative to conventional ones. Therefore, Ti addition via the use of Ti stabilized filler in the Nb stabilized AISI 347 weld proved to be efficient in enhancing its corrosion performance by forming a more protective passive oxide film.
{"title":"Understanding the role of Ti addition on the corrosion and passive film characteristics of Nb stabilized AISI 347 weld","authors":"Dikshant Malhotra, A. S. Shahi","doi":"10.1002/maco.202213158","DOIUrl":"https://doi.org/10.1002/maco.202213158","url":null,"abstract":"A multipass multilayer weld pad was fabricated on AISI 347 base metal with filler combinations of AISI 321 and AISI 347, to understand the role of Ti addition on metallurgical, corrosion, and passive film characteristics of the AISI 347 weld. Weld layers with Nb content of 0.53 wt.%, 0.47 wt.%, 0.23 wt.% and Ti of 0 wt.%, 0.21 wt.%, 0.33 wt.%, respectively, were extracted from fabricated weld pad. Selected weld metal compositions were subjected to thermal aging at 750°C for 24 h to investigate the influence of varying precipitation induced in these welds. Ti addition in AISI 347 weld showed lower enrichment of C and Cr at dendritic regions resulting in reduced Cr depletion, lower sensitization, enhanced pitting potential, and repassivation ability compared to conventional Nb stabilized AISI 347 weld. Passive film characteristics studied by electrochemical impedance spectroscopy and X‐ray photoelectron spectroscopy depicted formation of more protective, and dense passive film with higher Cr, Ni, and O concentrations for Ti added AISI 347 weld relative to conventional ones. Therefore, Ti addition via the use of Ti stabilized filler in the Nb stabilized AISI 347 weld proved to be efficient in enhancing its corrosion performance by forming a more protective passive oxide film.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"39 1","pages":"1701 - 1716"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90149348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexander Lutz, Malgorzata Chojak Halseid, I. De Graeve
In this study, the corrosion susceptibility of powder‐coated Al6060 alloys with increasing Cu and Zn content is evaluated in a benchmark test. Although higher Cu and Zn limits would enable the industry to increase the use of end‐of‐life scrap and thus produce eco‐friendlier aluminum profiles, such alloys are often disregarded due to concerns of corrosion, especially filiform corrosion. Our results suggest that this concern is ungrounded as long as typical quality specifications for the pretreatment and coating process are followed and the alloy composition is kept within the limits of the European norm AW6060. Furthermore, we point out that the variation of the results due to processing at different coating production lines is larger than the difference between alloys of different Cu and Zn contents.
{"title":"Corrosion performance of powder‐coated aluminum profiles with increased trace element content","authors":"Alexander Lutz, Malgorzata Chojak Halseid, I. De Graeve","doi":"10.1002/maco.202213173","DOIUrl":"https://doi.org/10.1002/maco.202213173","url":null,"abstract":"In this study, the corrosion susceptibility of powder‐coated Al6060 alloys with increasing Cu and Zn content is evaluated in a benchmark test. Although higher Cu and Zn limits would enable the industry to increase the use of end‐of‐life scrap and thus produce eco‐friendlier aluminum profiles, such alloys are often disregarded due to concerns of corrosion, especially filiform corrosion. Our results suggest that this concern is ungrounded as long as typical quality specifications for the pretreatment and coating process are followed and the alloy composition is kept within the limits of the European norm AW6060. Furthermore, we point out that the variation of the results due to processing at different coating production lines is larger than the difference between alloys of different Cu and Zn contents.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"45 1","pages":"1575 - 1585"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88056753","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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