Influence of heat treatment on corrosion behavior of hot rolled Mg5Gd alloys

被引：29

作者：

Cao, Fu-yong ^{[1
]}

Zhang, Jing ^{[1
]}

Li, Ke-Ke ^{[1
]}

Song, Guang-Ling ^{[1
,2
,3
]}

机构：

[1] Xiamen Univ, Coll Mat, Ctr Marine Mat Corros & Protect, Xiamen 361005, Peoples R China

[2] Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China

[3] Univ Queensland, Sch Engn, St Lucia, Qld 4072, Australia

来源：

TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2021年 / 31卷 / 04期

基金：

中国国家自然科学基金;

关键词：

magnesium alloy; rare earth; corrosion resistance; microstructure; heat treatment; MECHANICAL-PROPERTIES; MAGNESIUM ALLOYS; MG; GD; MICROSTRUCTURE; RESISTANCE; PERFORMANCE; PRECIPITATION; CYTOTOXICITY; SN;

D O I：

10.1016/S1003-6326(21)65551-6

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The influence of heat treatment on the corrosion behavior of rolled Mg5Gd alloys in 3.5 wt.% NaCl solution saturated with Mg(OH)(2) was characterized by immersion test, electrochemical test, scanning electrochemical microscopy (SECM) and corrosion morphology analysis in order to improve the corrosion resistance of Mg alloys. The results showed that solution treatment reduced the corrosion rate of the Mg5Gd significantly, resulting in relatively uniform corrosion and shallow corrosion cavities due to the dissolution of Cd-containing particles. The following aging process could further decrease the corrosion rate. Precipitation of nano-sized Cd-containing particles did not cause apparent micro-galvanic corrosion, which could be attributed to the formation of a protective corrosion product film fully covering the particles.

引用

页码：939 / 951

页数：13

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