| 铝合金微弧氧化工艺研究 |
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| 引用本文： | 赵艳,李玉海.铝合金微弧氧化工艺研究[J].表面技术,2009,38(1):51-53. |
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| 作者姓名： | 赵艳 李玉海 |
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| 作者单位： | 沈阳理工大学材料科学与工程学院,辽宁,沈阳,110168;沈阳理工大学材料科学与工程学院,辽宁,沈阳,110168 |
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| 基金项目： | 辽宁省科学技术厅基金 |
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| 摘 要： | 为了达到改善铝合金表面硬度低、耐磨耐蚀性差的目的,采用脉冲电源微弧氧化技术在硅酸钠电解液中在铝合金表面原位生长陶瓷膜.讨论氧化时间和电流密度对微弧氧化成膜厚度的影响.用数字式覆层测厚仪测量膜厚,扫描电子显微镜和X射线衍射分析膜层显微结构和相组成.结果表明:氧化时间越长,膜层越厚,但是30min以后不再增厚,电流密度越大,膜层越厚;陶瓷层表面有微孔产生,膜层与基体结合紧密,膜层由致密层、过渡层和疏松层组成,致密层厚且致密;氧化膜由γ-Al2O3、mullite莫来石(3Al2O3·2SiO2)和AlO相组成.
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| 关 键 词： | 铝合金 微弧氧化 氧化膜 陶瓷膜 耐蚀性 |
Study on Microarc Oxidation for Aluminum Alloy |
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| ZHAO Yan,LI Yu-hai.Study on Microarc Oxidation for Aluminum Alloy[J].Surface Technology,2009,38(1):51-53. |
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| Authors: | ZHAO Yan LI Yu-hai |
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| Affiliation: | ZHAO Yan,LI Yu-hai(School of Materials Science , Engineering,Shenyang Ligong University,Shengyang 110168,China) |
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| Abstract: | In order to improve hardness,hard wearing and eclipse resistance of the surface of Al alloy,the ceramic oxide coatings were prepared on Al alloy by pulse power microarc oxidation in a Na2SiO3 electrolytic solution.The thickness of the coatings was measured by the digital thickness meter.Microstructure and phase compositions were analyzed by scanning election microscopy(SEM) and X-Ray diffraction(XRD).The experimental results show that the longer oxidation duration is,the thicker coatings are,but thickness i... |
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| Keywords: | Aluminum alloy Microarc oxidation Oxidize coating Ceramic coating Corrosion resistance |
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