The corrosion characteristics and mechanism of directionally solidified Mg-3Zn-xCa alloys
文献类型：期刊论文
| 作者 | Zhang, Yi1,2; Feng, Xiaohui1; Huang, Qiuyan1; Li, Yingju1; Hao, Xuehui3; Wang, Changzheng3; Yang, Yuansheng1,2,3 |
| 刊名 | JOURNAL OF MAGNESIUM AND ALLOYS
 |
| 出版日期 | 2023-10-01 |
| 卷号 | 11期号:10页码:3673-3687 |
| 关键词 | Mg-Zn-Ca alloy Directional solidification Electrochemical characterization Corrosion mechanism. |
| ISSN号 | 2213-9567 |
| DOI | 10.1016/j.jma.2022.02.010 |
| 通讯作者 | Yang, Yuansheng(ysyang@imr.ac.cn) |
| 英文摘要 | An investigation into the corrosion characteristics and mechanism of directionally solidified (DSed) Mg-3Zn-xCa ( x = 0, 0.2, 0.5, 0.8 wt.%) alloys in 0.9 wt.% NaCl solution is presented. The DSed microstructure consists of columnar dendrites and eutectics distributed in the interdendritic region. The primary dendritic arm spacing (PDAS) and the volume fraction (fv ) of the secondary phases are under the significant impact of the content of Ca. The corrosion rates evaluated using electrochemical measurements and immersion tests are accelerated monotonously with the increase of Ca content in DSed alloys. The corrosion resistance of the DSed alloys is significantly affected by the corrosion products film (CPF) and the secondary phases. The corrosion products of DSed Mg-3Zn alloy contain Mg(OH)2 and ZnO. The existence of ZnO greatly enhances the corrosion resistance of DSed Mg-3Zn alloy. As for the DSed alloys containing Ca content, a relatively protective CPF without deep pits can form on the surface of DSed Mg-3Zn-0.2Ca specimen during the corrosion. The fv of the secondary phases dominates the corrosion rate of the DSed Mg-Zn-Ca alloys. The corrosion of DSed Mg-3Zn-xCa alloys initiates as a result of microgalvanic coupling between the cathodes of secondary phases and alpha-Mg matrix anode. Then, the corrosion gradually extends longitudinally with the breakdown of CPF. (c) 2022 Chongqing University. Publishing services provided by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ) Peer review under responsibility of Chongqing University |
| 资助项目 | Key Research and Devel- opment Plan of Shandong Province[2019JZZY020329] ; National Key Research and Development Program of China[2017YFB0103904] ; National Natural Science Foundation of China[51701211] ; DongGuan Innovative Research Team Program[2020607134012] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001124555200001 |
| 出版者 | KEAI PUBLISHING LTD |
| 资助机构 | Key Research and Devel- opment Plan of Shandong Province ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; DongGuan Innovative Research Team Program |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Yang, Yuansheng |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Wenhua Rd 72, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Liaocheng Univ, Sch Mat Sci & Engn, Liaocheng 252000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yi,Feng, Xiaohui,Huang, Qiuyan,et al. The corrosion characteristics and mechanism of directionally solidified Mg-3Zn-xCa alloys[J]. JOURNAL OF MAGNESIUM AND ALLOYS,2023,11(10):3673-3687. |
| APA | Zhang, Yi.,Feng, Xiaohui.,Huang, Qiuyan.,Li, Yingju.,Hao, Xuehui.,...&Yang, Yuansheng.(2023).The corrosion characteristics and mechanism of directionally solidified Mg-3Zn-xCa alloys.JOURNAL OF MAGNESIUM AND ALLOYS,11(10),3673-3687. |
| MLA | Zhang, Yi,et al."The corrosion characteristics and mechanism of directionally solidified Mg-3Zn-xCa alloys".JOURNAL OF MAGNESIUM AND ALLOYS 11.10(2023):3673-3687. |
入库方式： OAI收割
来源：金属研究所
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