Preparation and Properties of ZrO2-Al2O3 Composite Ceramic Coatings on 6061 Aluminum Alloy Surface

被引：0
|
作者：
Wang Rui [1 ]
Wang Xiaodong
Wu Xiaohong
Han Lu [2 ]
机构：
[1] Harbin Inst Technol, Dept Chem, Harbin 150001, Peoples R China
[2] Hebei Normal Univ Sci & Technol, Qinhuangdao 066004, Peoples R China
来源：
RARE METAL MATERIALS AND ENGINEERING | 2012年 / 41卷
关键词：
6061 Al alloy; micro-arc oxidation; ceramic coating; property; OXIDATION; FILMS;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
ZrO2-Al2O3 composite ceramic coatings on 6061 Al alloy surface were formed in situ by micro-arc oxidation. Phase composition, morphology, microhardness and young modulus of the ceramic coatings were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and nano-indentation. The results show that ceramic coatings consist of dense layer and porous layer, and there are many micro-pore distributing on the surface. The ceramic coatings are mainly composed of t-ZrO2, gamma-Al2O3 and alpha-Al2O3. Microhardness and young modulus are 19.569 and 307.927 GPa, respectively, and they are 8 times and 3 times as that of the 6061 aluminum alloy. Furthermore, the ceramic coatings also have higher thermal shock resistance and wear resistance.
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页码：365 / 368
页数：4
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