Effect of magnesium in aluminum alloys on characteristics of microarc oxidation coatings

被引：0
|
作者：
Liu Yao-hui [1 ]
Li Song [1 ]
Yu Si-rong [1 ]
Zhu Xian-yong [1 ]
Xu Bai-ming [1 ]
机构：
[1] Jilin Univ, Coll Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat, Changchun 130025, Peoples R China
来源：
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA | 2006年 / 16卷
关键词：
microarc oxidation; magnesium; alloying element; friction; wear; aluminum alloy;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Microarc oxidation(MAO) coatings were prepared on the surface of aluminum alloys with different contents of magnesium. The morphologies and surface roughness of the coatings were characterized by Confocal laser scanning microscopy(CLSM). Phase and chemical composition of the MAO coatings were analyzed by X-ray diffractometry(XRD) and X-ray photoelectron spectroscopy(XPS). The experimental results show that the coatings formed on different substrates have two-layer morphologies and are mainly composed of Al2O3 and Al-Si-O phases. In addition, the content of Al2O3 increases with increasing the content of magnesium. XPS results prove that magnesium from substrate indeed participates in the MAO process and is incorporated into the coating in the form of MgO. The coating formed on Al-3Mg substrate has the smallest mass loss and the lowest friction coefficient of 0.17-0.19.
引用
收藏
页码：S1624 / S1629
页数：6
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