| Si和RE对热浸铝镀层耐盐水腐蚀性能的影响 |
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| 引用本文： | 卢锦堂 陈锦虹. Si和RE对热浸铝镀层耐盐水腐蚀性能的影响[J]. 中国腐蚀与防护学报, 1997, 17(1): 63-67 |
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| 作者姓名： | 卢锦堂 陈锦虹 |
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| 作者单位： | 华南理工大学!广州510641 |
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| 摘 要： | 对铝浴中添加Ｓｉ和ＲＥ后批量热浸铝镀层的组织及耐盐水腐蚀性能的研究结果表明，铝浴中添加１￣７％Ｓｉ和适量ＲＥ，明显提高镀层耐腐蚀性能，减少镀层腐蚀速度随溶液温度升高而增加的幅度，但加入过量稀土则降低镀层耐蚀性，文中探讨了合金元素提高镀层耐蚀性能的原因。
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| 关 键 词： | 热浸镀 铝 盐水腐蚀 镀层 硅 RE 腐蚀 |
EFFECT OF Si AND RE IN HOT DIP ALUMINIZED COATINGS ON THEIR CORROSION RESISTANCE TO SALT WATER |
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| LU Jintang CHEN Jinhong XU Qiaoyu ZENG Guangliang LI GuoxiongZHANG Zhejian. EFFECT OF Si AND RE IN HOT DIP ALUMINIZED COATINGS ON THEIR CORROSION RESISTANCE TO SALT WATER[J]. Journal of Chinese Society For Corrosion and Protection, 1997, 17(1): 63-67 |
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| Authors: | LU Jintang CHEN Jinhong XU Qiaoyu ZENG Guangliang LI GuoxiongZHANG Zhejian |
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| Abstract: | The microstructure and corrosion resistance to salt spfay and salt water immersion (3% NaCl) of batch hot dip aluminized coatings containing Si and RE were studied. The tests indicated that addition of 1-7% Si and 0.05- 0.35% RE into the melted Al bath markedly improved the corrosion resistance of the coatings. But excessive RE would impair the improvement. With increasing temperature of salt water the corrosion rate of both Al coating and Al alloy coatings containing Si and RE increased remarkably, and for the Al alloy coatings the increase in corrosion rate was less than that for Al coating. The beneficial function of Si and RE in the corrosion resistance of the coatings was discussed. |
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| Keywords: | Hot dip aluminizing Salt spray corrosion Salt water corrosion Rare earth |
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