S. Lavrys, I. Pohrelyuk, H. Veselivska, A. Skrebtsov, Julia Kononenko, Yu.V. Marchenko
The purpose of this study was to investigate the corrosion behavior of Ti–6Al–Mo–1.5V–2Zr near‐alpha titanium alloy fabricated by additive manufacturing (AM). Titanium alloy specimens were fabricated by electron beam melting (EBM) and laser metal deposition (LMD). The same titanium alloy manufactured by traditional technology (TT) was used as a control. The correlations between corrosion resistance, microstructure and phase composition of titanium alloys fabricated by different technologies were investigated, through the use of electrochemical corrosion testing, scanning electron microscopy, X‐ray diffraction, and hardness testing. In this study, it was shown that the corrosion resistance of AM samples is lower than TT samples. The corrosion resistance of AM samples was attributed to the presence of more α′ martensite and less β‐Ti phases in the microstructure of titanium alloy than for TT samples. The electrochemical results suggest that titanium alloy fabricated by EBM has better corrosion resistance in 20% HCl solution at room temperature compared to titanium alloy fabricated by LMD.
{"title":"Corrosion behavior of near‐alpha titanium alloy fabricated by additive manufacturing","authors":"S. Lavrys, I. Pohrelyuk, H. Veselivska, A. Skrebtsov, Julia Kononenko, Yu.V. Marchenko","doi":"10.1002/maco.202213105","DOIUrl":"https://doi.org/10.1002/maco.202213105","url":null,"abstract":"The purpose of this study was to investigate the corrosion behavior of Ti–6Al–Mo–1.5V–2Zr near‐alpha titanium alloy fabricated by additive manufacturing (AM). Titanium alloy specimens were fabricated by electron beam melting (EBM) and laser metal deposition (LMD). The same titanium alloy manufactured by traditional technology (TT) was used as a control. The correlations between corrosion resistance, microstructure and phase composition of titanium alloys fabricated by different technologies were investigated, through the use of electrochemical corrosion testing, scanning electron microscopy, X‐ray diffraction, and hardness testing. In this study, it was shown that the corrosion resistance of AM samples is lower than TT samples. The corrosion resistance of AM samples was attributed to the presence of more α′ martensite and less β‐Ti phases in the microstructure of titanium alloy than for TT samples. The electrochemical results suggest that titanium alloy fabricated by EBM has better corrosion resistance in 20% HCl solution at room temperature compared to titanium alloy fabricated by LMD.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"39 1","pages":"2063 - 2070"},"PeriodicalIF":0.0,"publicationDate":"2022-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87675696","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}
Nickel aluminum bronze (NAB) and manganese aluminum bronze (MAB) are highly alloyed bronzes that are increasingly employed in several industrial sectors mainly related to the hostile environment due to their excellent resistance against corrosion, cavitation, erosion, and improved mechanical properties in comparison with other copper‐based alloys. These materials are sensitive to thermal treatments, such as welding, due to a multiphase microstructure in cast conditions. To contribute to the knowledge of the behavior of both alloys, the effect of welding processes on the corrosion behavior of NAB (CuAl10Fe5Ni5) and MAB (CuMn12Al8Fe4Ni2) is studied. As the microstructures of the parent zone (PZ), heat‐affected zone (HAZ), and weld seam (WS) may be quite different, the consequences with respect to corrosion behavior must be considered. In this study, the influence on corrosion behavior in synthetic sea water (SSW) was investigated using different welded test coupons representing identical (symmetrical) and hybrid joints of NAB and MAB. The microstructures of the welded samples were characterized by metallography using two chemical agents and examined by optical and scanning electron microscopy. By electrochemical corrosion testing, the major effect of welding processes on the corrosion behavior was found in influencing the amount and distribution of β‐phase which is prone to selective corrosion.
{"title":"Corrosion evaluation of welded nickel aluminum bronze and manganese aluminum bronze in synthetic sea water","authors":"I. Cobo, M. V. Biezma-Moraleda, P. Linhardt","doi":"10.1002/maco.202213328","DOIUrl":"https://doi.org/10.1002/maco.202213328","url":null,"abstract":"Nickel aluminum bronze (NAB) and manganese aluminum bronze (MAB) are highly alloyed bronzes that are increasingly employed in several industrial sectors mainly related to the hostile environment due to their excellent resistance against corrosion, cavitation, erosion, and improved mechanical properties in comparison with other copper‐based alloys. These materials are sensitive to thermal treatments, such as welding, due to a multiphase microstructure in cast conditions. To contribute to the knowledge of the behavior of both alloys, the effect of welding processes on the corrosion behavior of NAB (CuAl10Fe5Ni5) and MAB (CuMn12Al8Fe4Ni2) is studied. As the microstructures of the parent zone (PZ), heat‐affected zone (HAZ), and weld seam (WS) may be quite different, the consequences with respect to corrosion behavior must be considered. In this study, the influence on corrosion behavior in synthetic sea water (SSW) was investigated using different welded test coupons representing identical (symmetrical) and hybrid joints of NAB and MAB. The microstructures of the welded samples were characterized by metallography using two chemical agents and examined by optical and scanning electron microscopy. By electrochemical corrosion testing, the major effect of welding processes on the corrosion behavior was found in influencing the amount and distribution of β‐phase which is prone to selective corrosion.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"27 1","pages":"1788 - 1799"},"PeriodicalIF":0.0,"publicationDate":"2022-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87962860","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}
Huixia Zhang, Fuyao Hao, Yu Zhang, Xiang-bo Li, Han Guo
The corrosion behavior and mechanism of the high‐strength low‐alloy steel‐welded joint fabricated by the multilayer and multipass welding method were investigated using a scanning Kelvin probe, electrochemical measurements, and so forth. The results revealed that the microstructure of the first layer welding zone was dominated by granular bainite and acicular ferrite and was fine and uniform, which exhibited the best corrosion resistance. Whereas, since the average cooling rate decreased with the increase of welding pass, the grain size of the second and third layer weldings gradually grew, and the voltaic potential gradually decreased. In addition, the microstructure of the heat‐affected zone (HAZ) changed from the tempered sorbite structure of the equilibrium phase to the granular bainite or bainite structure of the nonequilibrium phase under the action of heat transfer. The HAZ became the weakest link for corrosion of welded joint, on account of the nonequilibrium organization and galvanic coupling among base metal, weld metal and HAZ.
{"title":"Corrosion behavior and mechanism of the high‐strength low‐alloy steel joined by multilayer and multipass welding method","authors":"Huixia Zhang, Fuyao Hao, Yu Zhang, Xiang-bo Li, Han Guo","doi":"10.1002/maco.202213154","DOIUrl":"https://doi.org/10.1002/maco.202213154","url":null,"abstract":"The corrosion behavior and mechanism of the high‐strength low‐alloy steel‐welded joint fabricated by the multilayer and multipass welding method were investigated using a scanning Kelvin probe, electrochemical measurements, and so forth. The results revealed that the microstructure of the first layer welding zone was dominated by granular bainite and acicular ferrite and was fine and uniform, which exhibited the best corrosion resistance. Whereas, since the average cooling rate decreased with the increase of welding pass, the grain size of the second and third layer weldings gradually grew, and the voltaic potential gradually decreased. In addition, the microstructure of the heat‐affected zone (HAZ) changed from the tempered sorbite structure of the equilibrium phase to the granular bainite or bainite structure of the nonequilibrium phase under the action of heat transfer. The HAZ became the weakest link for corrosion of welded joint, on account of the nonequilibrium organization and galvanic coupling among base metal, weld metal and HAZ.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"45 1","pages":"1826 - 1832"},"PeriodicalIF":0.0,"publicationDate":"2022-07-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85809566","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}
This study investigated the corrosion behavior of AISI 316L produced by direct energy deposition (DED). Microstructural and chemical analysis showed a homogeneous distribution of Si and Si–Mn inclusions of 0.5–1 µm and the Cr and Mo enrichment within interdendritic areas. Scanning Kelvin probe analysis of additively manufactured stainless steel highlighted a regular “striped‐like” surface potential feature with a potential gradient of 30 mV for a mean value of 0.320 ± 0.017 V versus standard hydrogen electrode. It can be related to the presence of the residual stress in the oxide film and the complex thermal history due to the fabrication process. A cyclic corrosion test simulating atmospheric conditions revealed the same corrosion properties for stainless steel fabricated by DED compared to cold rolled one. Various surface preparations of 316L were also exposed for corrosion tests. It was found that the “as‐received” and “brushed” surfaces exhibited poorer corrosion resistance due to the presence of an as‐build defective layer. However, prior passivation of brushed surface, machining, or mechanical grinding down to P1200 improve significantly the corrosion resistance.
{"title":"Corrosion behavior of additively manufactured AISI 316L stainless steel under atmospheric conditions","authors":"V. Helbert, S. Rioual, N. Le Bozec, D. Thierry","doi":"10.1002/maco.202213339","DOIUrl":"https://doi.org/10.1002/maco.202213339","url":null,"abstract":"This study investigated the corrosion behavior of AISI 316L produced by direct energy deposition (DED). Microstructural and chemical analysis showed a homogeneous distribution of Si and Si–Mn inclusions of 0.5–1 µm and the Cr and Mo enrichment within interdendritic areas. Scanning Kelvin probe analysis of additively manufactured stainless steel highlighted a regular “striped‐like” surface potential feature with a potential gradient of 30 mV for a mean value of 0.320 ± 0.017 V versus standard hydrogen electrode. It can be related to the presence of the residual stress in the oxide film and the complex thermal history due to the fabrication process. A cyclic corrosion test simulating atmospheric conditions revealed the same corrosion properties for stainless steel fabricated by DED compared to cold rolled one. Various surface preparations of 316L were also exposed for corrosion tests. It was found that the “as‐received” and “brushed” surfaces exhibited poorer corrosion resistance due to the presence of an as‐build defective layer. However, prior passivation of brushed surface, machining, or mechanical grinding down to P1200 improve significantly the corrosion resistance.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"21 1","pages":"1833 - 1843"},"PeriodicalIF":0.0,"publicationDate":"2022-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81816438","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}
The electrochemical corrosion behavior of Ti‐3Mo alloys under different accelerated corrosion tests including seawater corrosion, soil corrosion, and stray current corrosion was investigated. Results showed that the icorr value gradually increased with the increase of NaCl/Na2SO4 concentration, indicating a worsening corrosion resistance of Ti‐3Mo alloy. The presence of stray current seriously destroyed the oxide film on the sample surface, and inhibited the regeneration of oxide film, thereby resulting in the deterioration of corrosion resistance. Besides this, the potential difference between duplex phases was prone to form a microgalvanic coupling, which promoted the dissolution of local regions.
{"title":"Electrochemical corrosion behavior of Ti‐3Mo alloy under different accelerated corrosion tests","authors":"Youcong Huang, Zhongnan Zheng, Zhiwei Fu, Ying Zhang, Jun Xu, Shaokang Chen, Hao Zhang","doi":"10.1002/maco.202213348","DOIUrl":"https://doi.org/10.1002/maco.202213348","url":null,"abstract":"The electrochemical corrosion behavior of Ti‐3Mo alloys under different accelerated corrosion tests including seawater corrosion, soil corrosion, and stray current corrosion was investigated. Results showed that the icorr value gradually increased with the increase of NaCl/Na2SO4 concentration, indicating a worsening corrosion resistance of Ti‐3Mo alloy. The presence of stray current seriously destroyed the oxide film on the sample surface, and inhibited the regeneration of oxide film, thereby resulting in the deterioration of corrosion resistance. Besides this, the potential difference between duplex phases was prone to form a microgalvanic coupling, which promoted the dissolution of local regions.","PeriodicalId":18223,"journal":{"name":"Materials and Corrosion","volume":"5 1","pages":"1888 - 1899"},"PeriodicalIF":0.0,"publicationDate":"2022-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82191024","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}
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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：