The Effects of Graphite on Ceramic Coatings on LY12 Aluminium Alloys by Micro-arc Oxidation

被引：4
|
作者：
Gao, Jinglong [1 ]
Shao, Zhongcai [1 ]
机构：
[1] Shenyang Ligong Univ, Coll Mat Sci & Engn, Shenyang 110159, Peoples R China
来源：
POWDER TECHNOLOGY & APPLICATIONS IV | 2012年 / 454卷
关键词：
Micro-arc oxidization; Graphite; friction properties; Ceramic coatings; LY12 aluminium alloy; MAGNESIUM ALLOYS;
D O I：
10.4028/www.scientific.net/AMR.454.126
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
LY12 aluminum alloy samples were treated by micro-arc oxidation in sodium metasilicate electrolytes with graphite powder. The effects of graphite concentration on thickness, roughness, friction coefficient and phase composite of ceramic coating were investigated. The results indicated that the roughness and friction coefficient of ceramic coatings increased linearly. However, the thickness decreased adding graphite powder. XRD analyses indicated that the ceramic coatings fabricated on the surface of aluminum alloys by micro-arc oxidization were composed of graphite phase. SEM showed that the porosity of the ceramic coatings with distributing nonuniform micropore diameter were inceased with the increasing graphite concentration.
引用
收藏
页码：126 / 129
页数：4
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