New design principles for the bath towards chromate- and crack-free conversion coatings on magnesium alloys

doi:10.1016/j.jma.2019.12.013

IMR OpenIR

	New design principles for the bath towards chromate- and crack-free conversion coatings on magnesium alloys
	Liao, Shangju 1,2,3; Yu, Baoxing 1; Zhang, Xuliang 4; Lu, Xiaopeng 3; Zhou, Peng 3; Zhang, Chunyan 1; Chen, XiaoBo 5; Zhang, Tao 3; Wang, Fuhui 3
通讯作者	Zhou, Peng(zhoupeng@mail.neu.edu.cn) ; Zhang, Tao(zhangtao@mail.neu.edu.cn)
	2021-03-15
发表期刊	JOURNAL OF MAGNESIUM AND ALLOYS
ISSN	2213-9567
卷号	9 期号:2 页码:505-519
摘要	Cracking and low thickness are major obstacles to the high corrosion performance of conversion coating on magnesium alloy. In this work, the ratio of total acidity to pH (TA/pH) was applied as an indicator, and new principles regarding the design of conversion bath were proposed. The treatment bath should be composed of species that can be categorized into two groups: the first group of species that react with Mg substrate to increase the local pH at the interface; the second group that precipitate and contributes to the growth of coating. The species belong to second group exists in a supersaturated state and its precipitation process is almost independent on the reactions of the species in first group. By this way, a thick and crack-free two-layered conversion coating is obtained. Moreover, the nature of the adjustment of TA/pH and the roles of the oxidizing agent and catalyst were discussed. (C) 2020 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd.
关键词	Phosphate conversion coating Design principles Magnesium alloy TA/pH Corrosion resistance
资助者	National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; National Program for Young Top-notch Professionals ; Fundamental Research Funds for the Central Universities
DOI	10.1016/j.jma.2019.12.013
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51531007] ; National Natural Science Foundation of China[51771050] ; China Postdoctoral Science Foundation[2019M651128] ; National Program for Young Top-notch Professionals ; Fundamental Research Funds for the Central Universities[N170205002]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000640516900011
出版者	KEAI PUBLISHING LTD
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/161723
专题	中国科学院金属研究所
通讯作者	Zhou, Peng; Zhang, Tao
作者单位	1.Chinese Acad Sci, Inst Met Res, Corros & Protect Div, Shenyang Natl Lab Mat Sci, 62 Wencui Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Peoples R China 3.Northeastern Univ, Shenyang Natl Lab Mat Sci, 3-11 Wenhua Rd, Shenyang 110819, Peoples R China 4.Shanghai Spaceflight Precis Machinery Res Inst, 76 Guide Rd, Shanghai 201600, Peoples R China 5.RMIT Univ, Sch Engn, Carlton, Vic 3053, Australia
推荐引用方式 GB/T 7714	Liao, Shangju,Yu, Baoxing,Zhang, Xuliang,et al. New design principles for the bath towards chromate- and crack-free conversion coatings on magnesium alloys[J]. JOURNAL OF MAGNESIUM AND ALLOYS,2021,9(2):505-519.
APA	Liao, Shangju.,Yu, Baoxing.,Zhang, Xuliang.,Lu, Xiaopeng.,Zhou, Peng.,...&Wang, Fuhui.(2021).New design principles for the bath towards chromate- and crack-free conversion coatings on magnesium alloys.JOURNAL OF MAGNESIUM AND ALLOYS,9(2),505-519.
MLA	Liao, Shangju,et al."New design principles for the bath towards chromate- and crack-free conversion coatings on magnesium alloys".JOURNAL OF MAGNESIUM AND ALLOYS 9.2(2021):505-519.