| Structure and properties of ceramic coatings formed on aluminum alloys by microarc oxidation |
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| 作者姓名： | 刘万辉 鲍爱莲 刘荣祥 武万良 |
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| 作者单位： | College of Materials Science and Engineering, Heilongjiang Institute of Science and Technology, Harbin 150027, China |
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| 基金项目： | Foundation item： Project（04-71） supported by the Scientific Research Startup Foundation of Heilongjiang Institute of Science and Technology, China |
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| 摘 要： | The thick and hard ceramic coatings were deposited on 2024 AI alloy by microarc oxidation in the electrolytic solution. Microstructure, phase composition and wear resistance of the oxide coatings were investigated by SEM, XRD and friction and wear tester. The microhardness and thickness of the oxide coatings were measured. The results show that the ceramic coating is mainly composed of α-Al2O3 and γ-Al2O3. During oxidation, the temperature in the microarc discharge channel is very high to make the local coating molten. From the surface to interior of the coating, microhardness increases gradually. The microhardness of the ceramic coating is HV 1 800, and the microarc oxidation coatings greatly improve the antiwear properties of aluminum alloys.
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| 关 键 词： | 陶瓷 铝合金 强度 抗蚀性 有色金属 |
| 收稿时间： | 2006-07-28 |
| 修稿时间： | 2006-09-15 |
Structure and properties of ceramic coatings formed on aluminum alloys by microarc oxidation |
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| LIU Wan-hui, BAO Ai-lian, LIU Rong-xiang, WU Wan-liang.Structure and properties of ceramic coatings formed on aluminum alloys by microarc oxidation[J].Transactions of Nonferrous Metals Society of China,2006,16(A03):1645-1648. |
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| Authors: | LIU Wan-hui BAO Ai-lian LIU Rong-xiang WU Wan-liang |
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| Abstract: | |
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| Keywords: | 2024 alloy ceramic coatings aluminum alloys microarc oxidation wear resistance mechanical properties |
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