| 电沉积Zn-Al复合镀层的耐蚀性能 |
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| 引用本文： | 许乔瑜,蔡勤,卢锦堂,孔纲,车淳山.电沉积Zn-Al复合镀层的耐蚀性能[J].腐蚀与防护,2007,28(11):556-558. |
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| 作者姓名： | 许乔瑜 蔡勤 卢锦堂 孔纲 车淳山 |
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| 作者单位： | 华南理工大学材料科学与工程学院,广州,510640 |
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| 摘 要： | 采用腐蚀浸泡、电化学极化曲线、交流阻抗以及X射线衍射等方法,对电沉积Zn和Zn-Al复合镀层的耐蚀性能进行了比较研究。结果表明:Zn-Al复合镀层在5%NaCl溶液和10%HCl溶液中比Zn镀层具有更好的耐蚀性能;电化学极化和交流阻抗测试表明Zn-Al复合镀层的腐蚀电流密度减小,极化电阻和交流阻抗增大,腐蚀速率小于Zn镀层;Zn-Al复合镀层呈现(002)晶面高程度择优,是使其耐蚀性提高的主要原因。
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| 关 键 词： | 电沉积 Zn-Al复合镀层 耐蚀性 择优取向 |
| 文章编号： | 1005-748X(2007)11-0556-03 |
| 修稿时间： | 2006年12月12 |
CORROSION RESISTANCE OF ELECTROPLATED Zn-Al COMPOSITE COATING |
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| XU Qiao-yu,CAI Qin,LU Jin-tang,KONG Gang,CHE Chun-shan.CORROSION RESISTANCE OF ELECTROPLATED Zn-Al COMPOSITE COATING[J].Corrosion & Protection,2007,28(11):556-558. |
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| Authors: | XU Qiao-yu CAI Qin LU Jin-tang KONG Gang CHE Chun-shan |
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| Abstract: | The corrosion resistance of plain Zn and Zn-Al composite coating was comparatively investigated through corrosion immersion,electrochemical polarization curves,AC impedance and X-ray diffraction.Zn-Al composite coating exhibits better corrosion resistance in 5%NaCl and 10%HCl solution than plain Zn coating.Polarization curve and AC impedance measurements indicated that Zn-Al composite coating showed lower corrosion current,increased polarization resistance and electrochemical impedance,and reduced corrosion rate than plain Zn coating.The composite coating presented preferred orientation on(002),which is probably the reason for increase in its corrosion resistance. |
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| Keywords: | Electroplating Zn-Al composite coating Corrosion resistance Preferred orientation |
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