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The Dispersion of Nanometer SIC on Electro Less Ni-P-Nano SIC Composite PlatingKeywords: Depositing rate , disperser , electro less composite plating , micro-hardness , microstructure , nanometer sic , speed of mixing ultrasonic , surfactant Abstract: In this study, we study the effects of the concentration of Sic using the orthogonal test method, the speed of mixing, the temperature and the surfactants on depositing rate and micro-hardness and obtain the optimized technological scheme and fine Ni-P-SIC composite coating. The results showed that using citric acid-acetic acid as complexing agents can obtain high speed of depositing and homogeneous coating with Sic well-distributed. Among the technological parameters, the effects of temperature on depositing rate are biggest and the surfactants are next; the effects of the concentration of Sic particles on micro-hardness are biggest and the surfactants are next. Give consideration to depositing rate and stability of the liquid, the temperature should be controlled at 82±2°C, the concentration of Sic particles and surfactants should be controlled in 4 g/L and 60 mg/L. The influence to micro-hardness value of coating with ultrasonic disperser craft also is studied.
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