Real-time in situ observation of the corrosion process of die-cast AZ91D magnesium alloy in NaCl solutions under galvanostatic polarization

被引：18

作者：

Shao, Zheng ^{[1
]}

Nishimoto, Masashi ^{[1
]}

Muto, Izumi ^{[1
]}

Sugawara, Yu ^{[1
]}

机构：

[1] Tohoku Univ, Grad Sch Engn, Dept Mat Sci, Aoba Ku, 6-6-02 Aza Aoba, Sendai, Miyagi 9800579, Japan

来源：

CORROSION SCIENCE | 2021年 / 192卷

关键词：

Magnesium alloy; Galvanostatic polarization; Filiform corrosion; Microscale polarization technique; MG ALLOY; BEHAVIOR; MICROSTRUCTURE; RESISTANCE; MECHANISMS; EVOLUTION; PHASE; AZ31; BETA;

D O I：

10.1016/j.corsci.2021.109834

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ observations of the filiform corrosion process of die-cast AZ91D magnesium alloy were carried out in 0.1 and 0.01 M NaCl solutions (pH 8.0) through a microscale polarization technique. The changes in morphology were observed in real-time using an optical microscope. Filiform corrosion proceeded in lamellar alpha + beta structures adjacent to beta phases and sometimes in the alpha phase grains. The beta phases remained intact after filiform corrosion.

引用

页数：10

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