| 铸镁合金AZ91表面化学氧化膜的研究 |
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| 引用本文： | 孙雅茹,吴狄,刘正.铸镁合金AZ91表面化学氧化膜的研究[J].表面技术,2004,33(3):43-44,48. |
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| 作者姓名： | 孙雅茹 吴狄 刘正 |
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| 作者单位： | 1. 沈阳工业大学理学院,辽宁,沈阳,110023
2. 沈阳工程技术学院,辽宁,沈阳,110036 |
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| 摘 要： | 研究了铸镁合金AZ91的表面化学氧化膜的工艺及其耐蚀性,通过对镁合金表面化学氧化膜的扫描电镜(SEM)、能谱(XPS)及极化曲线的测量分析,探讨了镁合金表面化学氧化膜的组织、相、成分及其耐蚀性.研究结果显示,镁合金化学氧化膜的表面呈"干枯河床"形貌,有少量的空洞,有利于进一步的涂装需要,镁合金AZ91化学氧化膜在3.5%NaCl中的极化曲线表明,与AZ91的极化曲线对比表明,虽然化学氧化膜的极化曲线没有明显的钝化区,但腐蚀电流减小,具有一定的耐蚀性.
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| 关 键 词： | 镁合金 化学氧化膜 极化曲线 耐蚀性 镁合金 合金表面 化学氧化膜 研究 Magnesium Alloy Film Chemical Oxidation 腐蚀电流 钝化区 曲线对比 极化曲线 涂装 空洞 河床 显示 结果 成分 组织 测量分析 能谱 |
| 文章编号： | 1001-3660(2004)03-0043-02 |
Study on Chemical Oxidation Film of AZ91 Magnesium Alloy |
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| SUN Ya-ru,Liu Zheng,WU Di.Study on Chemical Oxidation Film of AZ91 Magnesium Alloy[J].Surface Technology,2004,33(3):43-44,48. |
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| Authors: | SUN Ya-ru Liu Zheng WU Di |
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| Affiliation: | SUN Ya-ru~1,Liu Zheng~1,WU Di~2 |
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| Abstract: | Process and corrosion resistance of chemical oxidation film of AZ91 Mg alloy were investigated in the paper, by means of SEM, XPS and polarization curves analysis on the surface film. Results showed that the chemical oxidation film was mainly consisted of MgO, Al_2O_3, GaP and Cr. Some holes and cracks could be seen. Its structure was non-crystal. The polarization curves showed that it had not long passivation district in the 3.5%NaCl solution. Compared with the pure Mg alloy,the corrosion current decreased,while the corrosion increased. |
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| Keywords: | Magnesium alloy Chemical oxidation film Polarization curve Corrosion resistance |
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