Unraveling the precipitate-induced discontinuity of the surface oxide film on Al alloy
文献类型：期刊论文
| 作者 | Zhou, Y. T.2; Jia, X. L.1,2; Li, J. B.1,2; Guan, G. G.1,2; Ma, X. L.2; Zhang, J. S.2 |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2022-07-15 |
| 卷号 | 590页码:10 |
| 关键词 | Aluminum alloy Surface oxide Precipitate Transmission electron microscopy Quasi in-situ |
| ISSN号 | 0169-4332 |
| DOI | 10.1016/j.apsusc.2022.153108 |
| 通讯作者 | Zhou, Y. T.(ytzhou@imr.ac.cn) |
| 英文摘要 | Precipitate-induced discontinuity of the surface oxide film is a significant reason for the increasing pitting susceptibility of age-hardening aluminum alloys but lacking of direct characterization. In the present work, the oxide film heterogeneity induced by Mg(Zn,Cu)(2) particles with different sizes in an Al-Zn-Mg-Cu alloy and the consequent corrosion behaviors were studied. Quasi in-situ transmission electron microscopy (TEM) observations indicated that the eta'-Mg(Zn,Cu)(2) precipitates with sizes less than 10 nm were electrochemically inert, while the grown eta particles underwent de-alloying and then promoted pitting events of the nearby alloy matrix. By means of cross-sectioning, it was revealed that the surface film on the solid solution and peak-aged alloys were structurally uniform although oxidation of the eta' resulted in local Mg enrichment in the surface film. For the grown eta particle, the Mg-rich zone was remarkable and covered not only the particle but also the surrounding alloy matrix. The flawed structure in the Mg-rich area should be responsible for the immediately de-alloying of the precipitate and then the corrosion attack of the peripheric alloy. |
| 资助项目 | research foundation of SYNL[L2019F15] |
| WOS研究方向 | Chemistry ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000788220700003 |
| 出版者 | ELSEVIER |
| 资助机构 | research foundation of SYNL |
| 源URL | [http://ir.imr.ac.cn/handle/321006/172566]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Zhou, Y. T. |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Y. T.,Jia, X. L.,Li, J. B.,et al. Unraveling the precipitate-induced discontinuity of the surface oxide film on Al alloy[J]. APPLIED SURFACE SCIENCE,2022,590:10. |
| APA | Zhou, Y. T.,Jia, X. L.,Li, J. B.,Guan, G. G.,Ma, X. L.,&Zhang, J. S..(2022).Unraveling the precipitate-induced discontinuity of the surface oxide film on Al alloy.APPLIED SURFACE SCIENCE,590,10. |
| MLA | Zhou, Y. T.,et al."Unraveling the precipitate-induced discontinuity of the surface oxide film on Al alloy".APPLIED SURFACE SCIENCE 590(2022):10. |
入库方式： OAI收割
来源：金属研究所
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