Corrosion behavior of AZ31 magnesium alloy in simulated acid rain solution

来源期刊：中国有色金属学报(英文版)2010年增刊第2期

论文作者：刘锋 宋影伟 单大勇 韩恩厚

文章页码：638 - 642

Key words：AZ31 magnesium alloy; simulated acid rain solution; Cl^- ion; AlMn phase

Abstract: The corrosion mechanism of AZ31 magnesium alloy used as automobile components and the influence of the concentration of Cl^- ion in simulated acid rain (SAR) were studied by electrochemical tests and SEM. The results show that pitting corrosion happens around the AlMn phases locating at the grain boundary. The corrosion of AZ31 magnesium alloy in SAR is controlled by the rate of anodic dissolution and hydrogen evolution, and the corrosion rate of AZ31 increases with increasing concentration of Cl^- ion. However, the Cl^- ion in SAR is not the main influencing factor inducing the pitting corrosion.

基金信息：the National Basic Research Program of China