Effect and mechanism of Li content on the corrosion resistance of Al-Li alloy

被引：0

作者：

Han, Chao ^{[1
]}

Yu, Mei ^{[1
]}

Xiao, Jian ^{[1
]}

Yang, Zhong ^{[1
]}

Zhao, Zhenjiang ^{[1
]}

Jia, Xuejiao ^{[1
]}

Li, Songmei ^{[1
]}

Liu, Jianhua ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

CORROSION SCIENCE | 2025年 / 246卷

关键词：

Al-Li alloy; Corrosion product layer; Electrochemical behavior; Diffusion; Cathodic reduction reaction; LOCALIZED CORROSION; OXIDE-FILMS; IMPEDANCE; BEHAVIOR;

D O I：

10.1016/j.corsci.2025.112768

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of Li content (0.5 wt%, 1.0 wt%, 1.5 wt% and 2.0 wt%) on corrosion resistance of Al-Li alloy was studied in 3.5 wt% NaCl. The corrosion resistance is affected by changes in the characteristics of the corrosion product layer caused by variations in Li content. The alloy with 1.5 wt% Li exhibited the best corrosion resistance, which is attributed to Li2CO3 generated on its surface. Li2CO3 layer acted as a barrier to corrosive Cl- and O2. The wide bandgap of Li2CO3 hindered the transfer of electrons, increasing the resistance of cathodic reaction and retarding further corrosion.

引用

页数：14

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