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Designing for the chemical conversion coating with high corrosion resistance and low electrical contact resistance on AZ91D magnesium alloy
Duan, GQ; Yang, LX; Liao, SJ; Zhang, CY; Lu, XP; Yang, YE; Zhang, B; Wei, Y; Zhang, T; Yu, BX; Zhang, XC; Wang, FH; Zhang, T (reprint author), Northeastern Univ, Shenyang Natl Lab Mat Sci, Corros & Protect Div, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China.
2018-05-01
Source PublicationCORROSION SCIENCE
ISSN0010-938X
Volume135Pages:197-206
AbstractThe designing idea for the chemical conversion coating with high corrosion resistance (CR) and low electrical contact resistance (ECR) on AZ91D Mg alloy was presented. The main characteristics of the conversion bath include acidic solution, strong oxidizing agent, proper pH value and cation concentration (determined by thermodynamic calculation). The desired performances are attributed to the unique microstructure of conversion coating, i.e., beta phase protruded from the surface and covered by a thinner passive film about 30 nm, contributing to low ECR, meanwhile, a thicker coating of 200-300 nm without cracks was deposited on alpha-phase, providing a good corrosion resistance.; The designing idea for the chemical conversion coating with high corrosion resistance (CR) and low electrical contact resistance (ECR) on AZ91D Mg alloy was presented. The main characteristics of the conversion bath include acidic solution, strong oxidizing agent, proper pH value and cation concentration (determined by thermodynamic calculation). The desired performances are attributed to the unique microstructure of conversion coating, i.e., beta phase protruded from the surface and covered by a thinner passive film about 30 nm, contributing to low ECR, meanwhile, a thicker coating of 200-300 nm without cracks was deposited on alpha-phase, providing a good corrosion resistance.
description.department[duan, guoqing ; liao, shangju ; zhang, chunyan ; yang, yange ; wei, yong ; zhang, tao ; yu, baoxing] chinese acad sci, inst met res, lab corros & protect, wencui rd 62, shenyang 110016, liaoning, peoples r china ; [duan, guoqing ; liao, shangju] univ sci & technol china, sch mat sci & engn, jinzhai rd 90, hefei 230026, anhui, peoples r china ; [lu, xiaopeng ; zhang, tao ; wang, fuhui] northeastern univ, shenyang natl lab mat sci, corros & protect div, 3-11 wenhua rd, shenyang 110819, liaoning, peoples r china ; [yang, lixin ; zhang, bo] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [zhang, xiaochen] heilongliang inst technol, coll mat & chem engn, hongqi st 999, harbin 150050, heilongjiang, peoples r china
KeywordPlasma Electrolytic Oxidation Enhanced Catalytic-activity Phosphate Ionic Liquid Mg-alloy Formation Mechanism Hydrogen Evolution Az31 Composite Protection Films
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNatural Science Foundation of China [51531007, 51771050, U1737102]; National program for the Young Top-notch Professionals; CAST [2017QNRC001]; Program of Hundred Talents of Chinese Academy of Sciences; Foundation of Young Scholars in HLJIT [2014QJ12]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79337
Collection中国科学院金属研究所
Corresponding AuthorYang, YE; Zhang, T (reprint author), Northeastern Univ, Shenyang Natl Lab Mat Sci, Corros & Protect Div, 3-11 Wenhua Rd, Shenyang 110819, Liaoning, Peoples R China.
Recommended Citation
GB/T 7714
Duan, GQ,Yang, LX,Liao, SJ,et al. Designing for the chemical conversion coating with high corrosion resistance and low electrical contact resistance on AZ91D magnesium alloy[J]. CORROSION SCIENCE,2018,135:197-206.
APA Duan, GQ.,Yang, LX.,Liao, SJ.,Zhang, CY.,Lu, XP.,...&Zhang, T .(2018).Designing for the chemical conversion coating with high corrosion resistance and low electrical contact resistance on AZ91D magnesium alloy.CORROSION SCIENCE,135,197-206.
MLA Duan, GQ,et al."Designing for the chemical conversion coating with high corrosion resistance and low electrical contact resistance on AZ91D magnesium alloy".CORROSION SCIENCE 135(2018):197-206.
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