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| 镀锌层三价铬黑色钝化工艺与性能研究 | |
| 引用本文： | 毕四富,李宁,屠振密,刘海萍,温建华.镀锌层三价铬黑色钝化工艺与性能研究[J].电镀与涂饰,2007,26(8):17-20. |
| 作者姓名： | 毕四富 李宁 屠振密 刘海萍 温建华 |
| 作者单位： | 1. 哈尔滨工业大学应用化学系,黑龙江,哈尔滨,150001 2. 哈尔滨工业大学应用化学系,黑龙江,哈尔滨,150001;哈尔滨工业大学(威海)海洋学院,山东,威海,264209 3. 哈尔滨工业大学(威海)海洋学院,山东,威海,264209 |
| 摘 要： | 采用正交试验法对镀锌层三价铬黑色钝化工艺组分进行优化,研究了工艺参数对钝化膜外观和耐蚀性的影响。根据实验结果优选出镀锌层三价铬黑色钝化工艺,该工艺含有三价铬盐、硝酸盐、钴镍盐和磷酸根,采用有机羧酸作配位剂。此工艺能够获得外观均匀黑亮、附着力良好的膜层,中性盐雾试验出白锈时间大于120h。 |
| 关 键 词： | 三价铬 黑色钝化 镀锌层 耐蚀性 |
| 文章编号： | 1004-227X（2007）08-0017-04 |
| 修稿时间： | 2007-01-292007-04-11 |
Study of passivation technology and property of trivalent chromium black film for zinc plating coating |
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| BI Si-fu,LI Ning,TU Zhen-mi,LIU Hai-ping,WEN Jian-hua.Study of passivation technology and property of trivalent chromium black film for zinc plating coating[J].Electroplating & Finishing,2007,26(8):17-20. | |
| Authors: | BI Si-fu LI Ning TU Zhen-mi LIU Hai-ping WEN Jian-hua |
| Affiliation: | Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China |
| Abstract: | The bath compositions of trivalent chrome black passivation for zinc plating coating were optimized by orthogonal test method and the effects of operation conditions on the appearance and the corrosion resistance of the passivation film were investigated. An optimal passivation technology of trivalent chrome black passivation was confirmed based on above experiments. The passivation bath includes chromium(III) ions, nitrate ions, cobalt(II) ions, nickel(II) ions and phosphate with organic acid as a complexing agent. The passivation film obtained from the optimal technology has bright black surface with uniform color and good adhesion to the electroplated zinc coating. No white rust was generated on the passivated zinc coating after exposure in Neutral Salt Spray for 120 h. |
| Keywords: | trivalent chrome black passivation zinc plating coating corrosion resistance |
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