| 镍-碳化钨微粒复合电沉积机理的研究 |
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| 引用本文： | 覃奇贤,朱龙章,刘淑兰,郭鹤桐. 镍-碳化钨微粒复合电沉积机理的研究[J]. 物理化学学报, 1994, 10(10): 892-896. DOI: 10.3866/PKU.WHXB19941006 |
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| 作者姓名： | 覃奇贤 朱龙章 刘淑兰 郭鹤桐 |
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| 作者单位： | Department of Applied Chemistry,Tianjin University,Tianjin 300072 |
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| 摘 要： | 研究了在普通镀镍溶液中导电性微粒碳化钨与基质金属镍形成复合镀层的电沉积过程，实验结果表明，导电性的ＷＣ微粒在与Ｎｉ共沉积形成Ｎｉ－ＷＣ复合镀层的过程中，也遵循Ｇｕｇｌｉｅｌｍｉ的两步吸附机理，只是在电极表面，ＷＣ微粒的弱吸附覆盖度与强吸附覆盖度的比值，较非导电性微粒的复合共沉积体系的要小得多。
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| 关 键 词： | 复合镀 Ni-WC复合镀层 导电性微粒 共沉积机理 两步吸附模型 |
| 收稿时间： | 1993-06-16 |
| 修稿时间： | 1993-11-01 |
A Study on the Codeposition Mechanism of Tungsten Carbide Particles with Nickel from Nickel Sulfate Bath |
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| Qin Qikian, Zhu Longzhang, Liu Shulan ,Guo Hetong. A Study on the Codeposition Mechanism of Tungsten Carbide Particles with Nickel from Nickel Sulfate Bath[J]. Acta Physico-Chimica Sinica, 1994, 10(10): 892-896. DOI: 10.3866/PKU.WHXB19941006 |
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| Authors: | Qin Qikian Zhu Longzhang Liu Shulan Guo Hetong |
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| Affiliation: | Department of Applied Chemistry,Tianjin University,Tianjin 300072 |
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| Abstract: | Codeposition process of conductive particles WC with matrix metal Ni from Watts nidel plating bath was studied- The experimental results show that two-step adsorption model proposed by Gugliedri also aPplies to the codeposition process of conductive particle WC with matrix metal Ni to form Ni -WC comPosite coating. Strong adsorPtion step is the rate controlling step. For the Ni-WC codeposition system, it is found that B < A, K=7.0X 103 and the ratio of loose adsorption coverage to strong adsorption coverage of particles at cathode surface is smaller than that of codeposition systerns with non-conductive particles. |
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| Keywords: | Composite plating Ni-WC composite coating Conductive particle Codeposition mechanism Two-step adsorption model |
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