| RE和Ca对镁铝合金一般腐蚀行为影响的电化学研究 |
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| 引用本文： | 卫中领,周学华,钮洁欣,杨磊,陈秋荣,黄元伟. RE和Ca对镁铝合金一般腐蚀行为影响的电化学研究[J]. 材料保护, 2006, 39(11): 18-21 |
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| 作者姓名： | 卫中领 周学华 钮洁欣 杨磊 陈秋荣 黄元伟 |
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| 作者单位： | 中国科学院上海微系统与信息技术研究所先进镁合金与防护技术中心,上海,200050;中国科学院上海微系统与信息技术研究所先进镁合金与防护技术中心,上海,200050;武汉大学环境科学与工程学院,湖北,武汉,430072 |
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| 摘 要： | 主要通过在镁铝合金中添加不同含量的RE、Ca元素,采用浸泡腐蚀试验和电化学测试手段研究了不同量Ca和RE的添加对镁合金耐一般腐蚀性能的影响规律.并通过脉冲极化研究了在Mg-9Al合金中加入RE、Ca对合金表面膜的自修复能力的影响.研究结果表明,少量钙的添加能使镁铝合金的耐蚀性略有提高,而RE和Ca复合添加的共同作用能使Mg-9Al合金具有良好的耐蚀性和表面膜自修复能力.
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| 关 键 词： | 镁铝合金 腐蚀行为 稀土元素 钙 |
| 文章编号： | 1001-1560（2006）11-0018-04 |
| 收稿时间： | 2006-07-24 |
| 修稿时间： | 2006-07-24 |
Effect of Rare Earth and Calcium as Additives on Corrosion Resistance of Mg-Al Alloy |
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| WEI Zhong-ling,ZHOU Xue-hua,NIU Jie-xin,YANG Lei,CHEN Qiu-rong,HUANG Yuan-wei. Effect of Rare Earth and Calcium as Additives on Corrosion Resistance of Mg-Al Alloy[J]. Journal of Materials Protection, 2006, 39(11): 18-21 |
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| Authors: | WEI Zhong-ling ZHOU Xue-hua NIU Jie-xin YANG Lei CHEN Qiu-rong HUANG Yuan-wei |
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| Abstract: | Rare earth (RE) and calcium of various mass fractions were introduced into Mg-9Al alloy. The effects of RE and Ca on the corrosion resistance of the Mg-Al alloy were investigated using immersion corrosion test and electrochemical test. At the same time, the effect of RE and Ca on the self-repairing ability of the surface film of Mg-Al alloy was examined by means of pulsed polarization. It was found that the introduction of a small amount of Ca led to a slight increase in the corrosion resistance of the Mg-Al alloy, while the incorporation of both RE and Ca contributed to significantly improving the corrosion resistance of the Mg-Al alloy and the self-repairing ability of the surface film of the alloy as well. |
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| Keywords: | Mg-Al alloy corrosion resistance rare earth calcium |
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