The effect of hot extrusion on the microstructure and anti-corrosion performance of LDHs conversion coating on AZ91D magnesium alloy

doi:10.1016/j.jallcom.2019.02.200

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	The effect of hot extrusion on the microstructure and anti-corrosion performance of LDHs conversion coating on AZ91D magnesium alloy
	Zhang, Xiaochen 1,2; Zhong, Feng 1; Li, Xuanpeng 1; Liu, Bin 1; Zhang, Chunyan 4; Buhe, Bateer 2; Zhang, Tao 3; Meng, Guozhe 1; Wang, Fuhui 3
刊名	JOURNAL OF ALLOYS AND COMPOUNDS
	2019-06-05
卷号	788 页码:756-767
关键词	AZ91D magnesium alloy Hot extrusion LDHs conversion coating beta-Mg17Al12 Microgalvanic Corrosion performance
ISSN号	0925-8388
DOI	10.1016/j.jallcom.2019.02.200
通讯作者	Zhang, Tao(zhangtao@mail.neu.edu.cn)
英文摘要	In this study, the effect of hot extrusion on the microstructure and anti-corrosion performance of LDHs (layered double hydroxides) conversion coating on AZ91D magnesium alloy was investigated by means of microscopic observation and electrochemical measurement. After hot extrusion, the refinement and rearrangement of the beta-Mg17Al12 phase promotes the microgalvanic effect in the formation process, and the increase of dislocation density, twin, grain boundary and texture accelerates the dissolution rate of the Mg matrix. Due to microstructural differences, the electrochemical activity of various specimens in the formation process can be ranked as the increasing series: as-cast < transverse < longitude. Therefore, a thicker and more compact LDH conversion coating is formed on the longitudinal section of the extruded alloy, indicating the highest anti-corrosion performance. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Program for the Young Top-notch Professionals ; National Natural Science Foundation of China[51531007] ; National Natural Science Foundation of China[51771050] ; National Natural Science Foundation of China[51705038]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000462767000089
资助机构	National Program for the Young Top-notch Professionals ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132467]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Tao
作者单位	1.Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China 2.Heilongjiang Inst Technol, Coll Mat Chem & Engn, Harbin 150050, Heilongjiang, Peoples R China 3.Northeastern Univ, Corros & Protect Div, Shenyang Natl Lab Mat Sci, Shenyang 110819, Liaoning, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xiaochen,Zhong, Feng,Li, Xuanpeng,et al. The effect of hot extrusion on the microstructure and anti-corrosion performance of LDHs conversion coating on AZ91D magnesium alloy[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,788:756-767.
APA	Zhang, Xiaochen.,Zhong, Feng.,Li, Xuanpeng.,Liu, Bin.,Zhang, Chunyan.,...&Wang, Fuhui.(2019).The effect of hot extrusion on the microstructure and anti-corrosion performance of LDHs conversion coating on AZ91D magnesium alloy.JOURNAL OF ALLOYS AND COMPOUNDS,788,756-767.
MLA	Zhang, Xiaochen,et al."The effect of hot extrusion on the microstructure and anti-corrosion performance of LDHs conversion coating on AZ91D magnesium alloy".JOURNAL OF ALLOYS AND COMPOUNDS 788(2019):756-767.