Study of Microhardness of Ceramic Coatings Formed on 6061 Aluminum Alloy by Micro-arc Oxidation

被引：0
|
作者：
Wang, X. -D. [1 ]
Wu, X. -H. [1 ]
Wang, Rui [1 ]
机构：
[1] Harbin Inst Technol, Dept Chem, Harbin, Heilongjiang, Peoples R China
来源：
2011 AASRI CONFERENCE ON ARTIFICIAL INTELLIGENCE AND INDUSTRY APPLICATION (AASRI-AIIA 2011), VOL 4 | 2011年
关键词：
micro-arc oxidation; 6061 Al alloy; ceramic coatings; microhardness; AL2O3; COATINGS; DEPOSITION;
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
To improve the low hardness and poor wear resistance of 6061 aluminum, ceramic coatings are obtained by in situ micro-arc oxidation coating growth on the 6061 Al alloy substrate. Phase composition, morphology, elemental component and microhardness were investigated by scanning electron microscopy (SEM), X-raydiffraction (XRD), energy dispersive spectroscopy (EDS) and microhardness instrument. The results showed that micro-arc oxidation ceramic coatings were composed of gamma-Al2O3. The content of gamma-Al2O3 was increased with the oxidation time increasing. When the oxidation time was 90 min, mullite and alpha-Al2O3 were found in ceramic coatings. The microhardness of the ceramic coatings increased with the oxidation time increasing, microhardness reached up to 1812HV when the oxidation time was 120 min.
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页码：399 / 402
页数：4
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