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.
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页数：14
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