Effect of heat treatment on oxidation resistance of magnesium alloys with additions of calcium oxide

被引：13

作者：

Liu, S. Y. ^{[1
]}

Liu, G. J. ^{[1
]}

Yu, C. ^{[2
]}

Lippmann, S. ^{[2
]}

Zhu, Y. F. ^{[1
]}

Jiang, Q. ^{[1
]}

机构：

[1] Jilin Univ, Sch Mat Sci & Engn, Key Lab Automobile Mat, Minist Educ, 5988 Renmin St, Changchun 130022, Peoples R China

[2] Friedrich Schiller Univ Jena, Otto Schott Inst Mat Res, Lobdergraben 32, D-07743 Jena, Germany

来源：

CORROSION SCIENCE | 2022年 / 207卷

基金：

中国国家自然科学基金;

关键词：

Magnesium; Oxidation resistance; Composite oxide layer; Heat treatment; HIGH-TEMPERATURE OXIDATION; PLASMA ELECTROLYTIC OXIDATION; CAO; AZ31; AM60; AZ91; BEHAVIOR; LAYERS;

D O I：

10.1016/j.corsci.2022.110558

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The paper investigated the effect of heat treatment on the oxidation resistance (OR) of Mg alloyed by CaO with 1, 3 and 5 wt%. After heat treatment at 400 degrees C in Ar atmosphere, the increase of OR was most striking for CaO at 3 wt%. The improved OR is attributed to a uniform and dense, 50 nm thin protective MgO-CaO composite layer formed on the surface during heat treatment. The protective layer formation is largely caused by outward diffusion of Ca atoms and a gradient in the partial pressure of oxygen.

引用

页数：9

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