| 电镀防护性锌基合金镀层钝化膜的耐蚀性 |
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| 引用本文： | 安茂忠,杨哲龙.电镀防护性锌基合金镀层钝化膜的耐蚀性[J].中国腐蚀与防护学报,1998,18(1):41-46. |
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| 作者姓名： | 安茂忠 杨哲龙 |
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| 作者单位： | 哈尔滨工业大学应用化学系!哈尔滨150001 |
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| 摘 要： | 防护性锌基合金镀层钝化膜的耐蚀性比锌镀层钝化膜提高２－４倍。ＸＰＳ及ＡＥＳ分析表明，合金镀层钝化膜与锌镀层钝化膜均由ＣｒＯ３、Ｃｒ２Ｏ３、Ｚｎ（ＯＨ）２、ＺｎＯ及Ｈ２Ｏ等组成，并且ＣｒＯ３／Ｃｒ２Ｏ３的相对含量和Ｚｎ（ＯＨ）２／ＺｎＯ相对含量也基本相同，它们的区别在于，合金镀层钝化膜中总铬量较高，膜层完整、致密，镀层／钝化膜界面存在铁系金属的富集层，这是锌基合金镀层钝化膜具有高耐蚀性的主要原因。
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| 关 键 词： | 锌基合金 电镀 耐蚀性 钝化 |
CORROSION RESISTANCE OF PASSIVATED FILM ON ELECTRODEPOSITED ZINC BASE ALLOYS |
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| AN Mao-zhong YANG Zhe-long ZHANG Jing-shuang TU Zhen-mi.CORROSION RESISTANCE OF PASSIVATED FILM ON ELECTRODEPOSITED ZINC BASE ALLOYS[J].Journal of Chinese Society For Corrosion and Protection,1998,18(1):41-46. |
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| Authors: | AN Mao-zhong YANG Zhe-long ZHANG Jing-shuang TU Zhen-mi |
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| Abstract: | The corrosion resistance of passivated films on electrodeposited Zn-Fe, Zn-Co, Zn-Ni alloys was 2-4 times higher than that on Zn. Results of XPS and AES showed that all these passive films were composed of CrO3, Cr2O3, Zn(OH)2, ZnO and H2O, and the relative contents of CrO3/Cr2O3 and Zn(OH)2/ZnO were basically the same. The only difference was that the total content of Cr in passivated film on electrodeposited zinc alloys was higher. It led to an integrated and fine protective film, which possessed self-repair ability. In addition, the presence of an iron-group metal enriched layer obstructed the corrosion process. |
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| Keywords: | Zinc base alloy Electroplating Corrosion resistance Passivation |
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