| 4种羧酸盐配位剂对装饰性三价铬电镀的作用 |
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| 引用本文： | 杨建文,邓型深,徐浩森,杨文平.4种羧酸盐配位剂对装饰性三价铬电镀的作用[J].材料保护,2009,42(6). |
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| 作者姓名： | 杨建文 邓型深 徐浩森 杨文平 |
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| 作者单位： | 桂林工学院材料与化学工程系,广西,桂林,541004 |
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| 基金项目： | 广西自然科学基金，广西科学研究与技术开发计划项目，桂林工学院博士科研启动基金 |
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| 摘 要： | 装饰性三价铬电镀层难以增厚、镀液不稳定、色泽不能令人满意.为此,采用线性电位扫描法探讨了甲酸铵、乙酸铵、草酸铵、柠檬酸铵4种羧酸盐配位剂体系中镀光亮镍钢表面电还原三价铬的极化特征,开发了草酸铵和甲酸铵复合配位剂三价铬电镀工艺,并对铬镀层的主要性能进行了研究.结果表明:草酸铵配位能力较强.可作为三价铬电镀的配位剂,甲酸铵既是配位剂也是消除六价铬干扰的还原剂,两者复配加入三价铬电镀液,可以获得较好的镀铬层,其厚度可达1.0～1.3 μm,光亮度为2级,耐蚀性、结合力等性能良好,能够满足装饰用途要求.
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| 关 键 词： | 羧酸盐配位剂 三价铬电镀 装饰性电镀 |
Effect of Four Kinds of Carboxylate Complexing Agent on Electroplating of Trivalent Chromium |
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| YANG Jian-wen,DENG Xing-shen,XU Hao-sen,YANG Wen-ping.Effect of Four Kinds of Carboxylate Complexing Agent on Electroplating of Trivalent Chromium[J].Journal of Materials Protection,2009,42(6). |
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| Authors: | YANG Jian-wen DENG Xing-shen XU Hao-sen YANG Wen-ping |
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| Affiliation: | YANG Jian-wen,DENG Xing-shen,XU Hao-sen,YANG Wen-ping(Department of Materials , Chemical Engineering,Guilin University of Technology,Guilin541004,China) |
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| Abstract: | The polarization characteris-tics of electroplated trivalent chromium on steel surface preplated with bright nickel coating in the presence of carboxylate comple-xing agents including ammonium formate,ammonium acetate,ammonium oxalate and ammonium citrate were analyzed by means of linear sweep voitammetry.A new plating process was estab-lished for electroplating of trivalent chromium using ammonium formate and ammonium oxalate as a combinatory complexing a-gent.Moreover,the main performances of the electrop... |
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| Keywords: | carboxylate complexing agent trivalent chromium electroplating decorative electroplating |
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