| Thickness effects on corrosion and wear resistance properties of micro-arc discharge oxide coatings on AZ91D magnesium alloys |
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| 作者姓名： | 黄伟九 刘明 李兆峰 曾荣昌 |
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| 作者单位： | School of Materials Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China |
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| 基金项目： | Foundation item： Project（2005BB4079） supported by the Chongqing Natural Science Foundation, China |
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| 摘 要： |
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| 关 键 词： | 厚度 金属腐蚀 磨损行为 陶瓷涂层 镁合金 氧化行为 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Thickness effects on corrosion and wear resistance properties of micro-arc discharge oxide coatings on AZ91D magnesium alloys |
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| HUANG Wei-jiu, LIU Ming, LI Zhao-feng, ZENG Rong-chang.Thickness effects on corrosion and wear resistance properties of micro-arc discharge oxide coatings on AZ91D magnesium alloys[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1827-1830. |
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| Authors: | HUANG Wei-jiu LIU Ming LI Zhao-feng ZENG Rong-chang |
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| Abstract: | The microarc oxidation coatings with difference thickness were synthesized on AZ91D magnesium alloy. The microstructure and phase structure of the coatings were analyzed using SEM and XRD, the tribological properties and corrosion resistance behaviour of the coatings were also investigated. The results show that the coating contains two layers, a porous outer layer and relatively dense inner layer. The microhardness of the MAO coatings is four to six times higher than that of the magnesium alloy substrate. The MAO coatings have much better wear-resistance and corrosion resistance abilities than those of magnesium alloy substrate, but possess higher friction coefficient. The results further indicate that there is an optimization thickness for corrosion and wear resistance. |
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| Keywords: | magnesium alloy micro-arc oxidization wear corrosion ceramic coating |
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