The Corrosion Resistance of Al Film on AZ31 Magnesium Alloys by Magnetron Sputtering

被引：12
|
作者：
Gao, Zhengyuan [1 ]
Yang, Dong [1 ]
Sun, Chengjin [1 ]
Du, Lianteng [1 ]
Zhang, Xiang [1 ]
An, Zhiguo [1 ]
机构：
[1] Chongqing Jiaotong Univ, Sch Mech & Vehicle Engn, Chongqing 400074, Peoples R China
来源：
METALS | 2021年 / 11卷 / 10期
关键词：
magnetron sputtering; AZ31 magnesium alloy; Al film; microstructure; corrosion resistance; BEHAVIOR;
D O I：
10.3390/met11101522
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nano Al films were prepared on AZ31 magnesium alloy samples by DC magnetron sputtering. The effects of sputtering power on the microstructure and corrosion resistance of the Al film were investigated. The results show that the surface of aluminum film is dense and polycrystalline state, and it is oriented along the Al (111) crystal plane. The grain size of Al film first increases and then decreases with the increase of sputtering power. When the sputtering power exceeds 100 W, there is no insignificant effect on the orientation of the Al crystals and the corrosion current density of the samples with Al film are reduced by two orders of magnitude. The corrosion resistance of the magnesium alloy samples with the Al film magnetron sputtered varies with the sputtering power. Compared with low sputtering power, the Al film sputtered by high power has the most excellent corrosion resistance, but too high sputtering power will lead to micro cracks on the Al film, which will adversely affect the corrosion resistance.</p>
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页数：12
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