Probing the effect of microstructural difference of AZ91D magnesium alloys on the corrosion resistance of phosphate conversion coatings

doi:10.1108/ACMM-10-2023-2910

IMR OpenIR

	Probing the effect of microstructural difference of AZ91D magnesium alloys on the corrosion resistance of phosphate conversion coatings
	Zhou, Peng 1; Chen, Zikun 1; Wang, Duo 2,3; Yu, Baoxing 4; Zhang, Chunyan 5; Zhang, Tao 6; Xiao, Jintao 7; Sun, Jingli 8; Wang, Xiaoxue 9; Yuan, Yong 8; Wang, Fuhui 6
通讯作者	Zhang, Chunyan(zhangtao@mail.neu.edu.cn) ; Zhang, Tao(zhangtao@mail.neu.edu.cn)
	2025-01-02
发表期刊	ANTI-CORROSION METHODS AND MATERIALS
ISSN	0003-5599
卷号	72 期号:1 页码:1-12
摘要	PurposeThe purpose of this paper was to compare the electrochemical homogeneity of AZ91D after various heat treatment processes, and its influence on the growth, composition, microstructure and corrosion resistance of phosphate conversion coatings.Design/methodology/approachThe electrochemical activity of different heat-treated Mg alloys was evaluated via scanning vibrational electrode technique; the characterization of the microstructure and phase composition of coatings was conducted using a scanning electron microscope and X-ray diffraction. The corrosion resistance was evaluated by electrochemical tests and accelerated neutral salt spray tests.FindingsT6 treatment increased the electrochemical homogeneity, while T4 treatment decreased the microstructure homogeneity of AZ91D magnesium alloy, due to the existence of residual Al-Mn impurity phase. The phosphate conversion coating (PCC) on T6 heat-treated Mg alloys showed the most compact microstructure and the best corrosion resistance, while the coating on the T4 heat-treated Mg alloy exhibited the worst microstructure and corrosion resistance.Originality/valueThe microstructure and protectiveness of coatings are related to the homogeneousness of Mg alloy: an Mg substrate with a more heterogeneous electrochemical reactivity yields a PCC with less protectiveness, which could be explained by the difference of precipitation kinetics at the metal/electrolyte interface.
关键词	Corrosion performance Conversion coating Magnesium alloys Heat-treatment TA/pH
资助者	National Natural Science Foundation of China ; National program for the Young Top-notch Professionals ; Shanghai Aerospace Science and Technology Innovation Fund ; Fundamental Research Funds for the Central Universities ; Natural Science Foundation of Shanghai
DOI	10.1108/ACMM-10-2023-2910
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[52201066] ; National program for the Young Top-notch Professionals ; Shanghai Aerospace Science and Technology Innovation Fund[SAST2020-046] ; Fundamental Research Funds for the Central Universities[N2224002-21] ; Natural Science Foundation of Shanghai[20ZR1424200]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001378015300001
出版者	EMERALD GROUP PUBLISHING LTD
引用统计	被引频次：1[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/321006/181083
专题	中国科学院金属研究所
通讯作者	Zhang, Chunyan; Zhang, Tao
作者单位	1.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang, Peoples R China 2.Northeastern Univ, Dept Corros, Shenyang, Peoples R China 3.Northeastern Univ, Protect Ctr, Shenyang, Peoples R China 4.Chinese Acad Sci, Shi changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang, Peoples R China 5.AECC Harbin Dongan Engine Co Ltd, Harbin, Peoples R China 6.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang, Peoples R China 7.Shanghai Aerosp Equipments Manufacturer Co Ltd, Shanghai, Peoples R China 8.SAST Shanghai Spaceflight Precis Machinery Inst, Shanghai, Peoples R China 9.Beijing Inst Space Long March Vehicle, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Peng,Chen, Zikun,Wang, Duo,et al. Probing the effect of microstructural difference of AZ91D magnesium alloys on the corrosion resistance of phosphate conversion coatings[J]. ANTI-CORROSION METHODS AND MATERIALS,2025,72(1):1-12.
APA	Zhou, Peng.,Chen, Zikun.,Wang, Duo.,Yu, Baoxing.,Zhang, Chunyan.,...&Wang, Fuhui.(2025).Probing the effect of microstructural difference of AZ91D magnesium alloys on the corrosion resistance of phosphate conversion coatings.ANTI-CORROSION METHODS AND MATERIALS,72(1),1-12.
MLA	Zhou, Peng,et al."Probing the effect of microstructural difference of AZ91D magnesium alloys on the corrosion resistance of phosphate conversion coatings".ANTI-CORROSION METHODS AND MATERIALS 72.1(2025):1-12.