| The effect of hot extrusion on the microstructure and anti-corrosion performance of LDHs conversion coating on AZ91D magnesium alloy | |
| Zhang, Xiaochen1,2; Zhong, Feng1; Li, Xuanpeng1; Liu, Bin1; Zhang, Chunyan4; Buhe, Bateer2; Zhang, Tao3; Meng, Guozhe1; Wang, Fuhui3 | |
| Corresponding Author | Zhang, Tao(zhangtao@mail.neu.edu.cn) |
| 2019-06-05 | |
| Source Publication | JOURNAL OF ALLOYS AND COMPOUNDS
 |
| ISSN | 0925-8388 |
| Volume | 788Pages:756-767 |
| Abstract | 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. |
| Keyword | AZ91D magnesium alloy Hot extrusion LDHs conversion coating beta-Mg17Al12 Microgalvanic Corrosion performance |
| Funding Organization | National Program for the Young Top-notch Professionals ; National Natural Science Foundation of China |
| DOI | 10.1016/j.jallcom.2019.02.200 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000462767000089 |
| Publisher | ELSEVIER SCIENCE SA |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/132473 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Zhang, Tao |
| Affiliation | 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 |
| Recommended Citation 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. |
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