Corrosion and characterisation of dual phase Mg-Li-Ca alloy in Hank's solution: The influence of microstructural features

被引：317

作者：

Zeng, Rong-Chang ^{[1
,2
]}

Sun, Lu ^{[1
]}

Zheng, Yu-Feng ^{[3
,4
]}

Cui, Hong-Zhi ^{[1
]}

Han, En-Hou ^{[2
]}

机构：

[1] Shandong Univ Sci & Technol, Coll Mat Sci & Engn, Qingdao 266590, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China

[3] Peking Univ, Coll Engn, State Key Lab Turbulence & Complex Syst, Beijing 100871, Peoples R China

[4] Peking Univ, Coll Engn, Dept Mat Sci & Engn, Beijing 100871, Peoples R China

来源：

CORROSION SCIENCE | 2014年 / 79卷

基金：

中国国家自然科学基金;

关键词：

Magnesium; EPMA; XPS; Pitting corrosion; Oxidation; IN-VIVO CORROSION; ELECTROCHEMICAL-BEHAVIOR; MECHANICAL-PROPERTIES; MAGNESIUM ALLOYS; AL; PROGRESS; LITHIUM;

D O I：

10.1016/j.corsci.2013.10.028

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of the microstructure and the oxide film of the Mg-9.29Li-0.88Ca alloy on its corrosion behaviour was investigated using SEM, EPMA, XPS and corrosion measurements. The results demonstrated that the fine-grained microstructure improved the mechanical and corrosion resistance of the alloy and shifted pitting corrosion to overall corrosion. The oxide film contained a multi-layered structure, with the outer layer being enriched in lithium-bearing compounds; the interior layer predominantly consisting of oxides, hydroxides and carbonates of lithium and magnesium; and the bottom layer containing oxides. The Pilling-Bedworth ratio for chemical compounds was proposed, and the corrosion rates were characterised. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：69 / 82

页数：14

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