Enhanced corrosion resistance of AZ31 alloy by laser remelting pre-treatment and Mg/Al-LDH layer

被引：5
|
作者：
Sun, Song [1 ]
Shang, Jian [1 ]
Lin, Dan [1 ]
机构：
[1] Liaoning Univ Technol, Sch Mat Sci & Engn, Jinzhou 121001, Peoples R China
来源：
MATERIALS LETTERS | 2023年 / 330卷
关键词：
Metals and alloys; Laser processing; Thin films; Corrosion; BEHAVIOR; FILM;
D O I：
10.1016/j.matlet.2022.133387
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
After laser remelting (LR) of magnesium alloys by different processes, a simple hydrothermal method was applied to prepare Mg/Al-layered double hydroxide films (LDHs) on them to improve their corrosion resistance. The results show that LR/LDH can effectively improve the corrosion resistance of magnesium alloys. Comparing to that of the bare AZ31 Mg alloy, the corrosion current density of the AZ31-LR/LDH was decreased by 4 orders of magnitude. LR makes the distribution of LDH more uniform and dense, the physical protection of LR layer and adsorption of Cl- by LDHs inhibit the corrosion of AZ31 alloy.
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页数：4
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