| 铝合金稀土转化膜成膜工艺研究 |
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| 引用本文： | 王均涛,吴建华,陈光章.铝合金稀土转化膜成膜工艺研究[J].电化学,2003,9(3):350-356. |
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| 作者姓名： | 王均涛 吴建华 陈光章 |
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| 作者单位： | 七二五研究所青岛分部,七二五研究所青岛分部,七二五研究所青岛分部 山东青岛266071
,山东青岛266071
,山东青岛266071 |
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| 摘 要： | 应用正交实验设计 ,开发并研究了LY1 2铝合金 4价铈盐转化膜的成膜工艺及其膜层的耐蚀性能 .实验表明 :经稀土转化处理的铝合金其点蚀电位升高 ,自然腐蚀电位有所降低 ,从而降低了点蚀敏感性 ;试样极化阻力提高 70倍以上 ,耐蚀性能大大提高 ,与铬酸盐相当 ;另外 ,还结合电化学测试和表面分析 ,初步探讨了铝合金稀土转化膜的耐蚀机理
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| 关 键 词： | 铝合金 铈盐处理 转化膜 工艺 耐蚀性 |
| 文章编号： | 1006-3471(2003)03-0350-07 |
| 收稿时间： | 2003-08-28 |
| 修稿时间： | 2002年11月26日 |
The Technique of Rare-earth Conversion Coatings on Aluminum Alloy |
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| WANG Jun_tao ,WU Jian_hua,CHEN Guang_zhang.The Technique of Rare-earth Conversion Coatings on Aluminum Alloy[J].Electrochemistry,2003,9(3):350-356. |
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| Authors: | WANG Jun_tao WU Jian_hua CHEN Guang_zhang |
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| Institution: | WANG Jun_tao *,WU Jian_hua,CHEN Guang_zhang |
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| Abstract: | The orthogonal design was used to screen the film_forming technique on LY12 aluminum alloy using quadrivalent cerium salt, and the corrosion_resistance performance of the coating was studied. The results revealed that: after LY12 aluminum alloy was treated by cerium salt, its pitting potential shifts to positive direction while the corrosion potential slightly decreases, showing that the alloy becomes less sensitive to pitting corrosion was greatly improved, comparable to that after chromate treatment; in addition, by combining the results of electrochemical measurements with surface analysis, the mechanism of corrosion_resistance on the race_earth conversion coating of the aluminum alloy was also discussed. |
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| Keywords: | Aluminum alloy Cerium salt treatment Conversion coating Technique Corrosion resistance |
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