Exfoliation corrosion of extruded Mg-Li-Ca alloy
文献类型：期刊论文
| 作者 | Ding, ZY; Cui, LY; Zeng, RC; Zhao, YB; Guan, SK; Xu, DK; Lin, CG |
| 刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
 |
| 出版日期 | 2018-09-01 |
| 卷号 | 34期号:9页码:1550-1557 |
| 关键词 | Magnesium-lithium alloy Exfoliation corrosion Intermetallic compound Extrusion Microstructure |
| ISSN号 | 1005-0302 |
| DOI | 10.1016/j.jmst.2018.05.014 |
| 英文摘要 | Exfoliation on as-extruded Mg-1Li-1Ca magnesium alloy was investigated after an immersion in 3.5 wt% NaCl aqueous solution for 90, 120 and 150 days through optical microscope, digital camera, scanning electron microscope, electrochemical workstation, scanning Kalvin probe, X-ray diffraction and Fourier transform infrared spectroscope. The results demonstrated that exfoliation corrosion occurred on extruded Mg-1Li-1Ca alloy due to elongated microstructure parallel to surface, and delamination of lamellar structure resulted from galvanic effect and wedge effect. Skin layer with fine grains exhibited better corrosion resistance, whereas the interior with coarse grains and the intermetallic compound, Mg2Ca particles existing in a fibrous structure, dispersed along grain boundaries and extrusion direction in a line. Furthermore, galvanic effect between Mg2Ca particles and their neighboring alpha-Mg matrix facilitated dissolution of Mg2Ca particles and alpha-Mg matrix; wedge effect was caused by formation of corrosion products. Exfoliation corrosion of extruded Mg-Li-Ca alloys might be a synergic effect of pitting corrosion, filiform corrosion, intergranular corrosion and stress corrosion. Finally, exfoliation corrosion mechanism was proposed. (C) 2018 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
| 学科主题 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000438129900013 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79997]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 作者单位 | 1.[Ding, Zi-You 2.Cui, Lan-Yue 3.Zeng, Rong-Chang 4.Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266590, Peoples R China 5.Zhengzhou Univ, Sch Mat Sci & Engn, Zhengzhou 450002, Henan, Peoples R China 6.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 7.Sci & Technol Marine Corros & Protect Lab, Qingdao 266071, Peoples R China 8.Luoyang Ship Mat Res Inst, Qingdao Branch, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ding, ZY,Cui, LY,Zeng, RC,et al. Exfoliation corrosion of extruded Mg-Li-Ca alloy[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(9):1550-1557. |
| APA | Ding, ZY.,Cui, LY.,Zeng, RC.,Zhao, YB.,Guan, SK.,...&Lin, CG.(2018).Exfoliation corrosion of extruded Mg-Li-Ca alloy.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(9),1550-1557. |
| MLA | Ding, ZY,et al."Exfoliation corrosion of extruded Mg-Li-Ca alloy".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.9(2018):1550-1557. |
入库方式： OAI收割
来源：金属研究所
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