Influence of Stirring Speed on Plating Ni-SiC on Aluminum Alloy Surface

Taking nickel sulfate,nickel chloride,phosphate and silicon carbide as the basic components of bath,the Ni-SiC composite coating on aluminum alloy substrate was prepared by plating.The effects of stirring speed on the surface of electroplated Ni-alloy SiC were discussed,and the optimum stirring speed was obtained.The results show that the stirring speed has great influence on the coating performance.When the stirring speed is 300 r/min,the maximum deposition rate is obtained and the coating with uniformity,compact,small and good performance appears.The content of SiC in the coating reaches the maximum.