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Citation: Tan Qi-Xian, Zhu Long-Zhang, Liu Shu-Lan, Guo He-Tong. 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 shu

A Study on the Codeposition Mechanism of Tungsten Carbide Particles with Nickel from Nickel Sulfate Bath

1.
Department of Applied Chemistry,Tianjin University,Tianjin 300072

Received Date: 16 June 1993
Available Online: 15 October 1994

Codeposition process of conductive particles WC with matrix metal Ni from Watts nickel plating bath was studied- The experimental results show that two-step adsorption model proposed by Guglielmi 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 systems with non-conductive particles.
- Composite plating,
- Ni-WC composite coating,
- Conductive particle,
- Codeposition mechanism,
- Two-step adsorption model
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