纳米SiC沉积量对化学复合镀层耐磨性影响

The Effects of Quantity of Nano SiC Plated in the Coating on the Ware-resistance of Electroless Plating Ni-P Coating

采用单因素试验方法,分别研究了表面活性剂、施镀温度、镀液pH值、转子转速、镀液中纳米粉体浓度5个因素对纳米SiC在Ni-P基化学复合镀层中沉积量的影响规律。结果表明:同时添加阴离子和非离子做表面活性剂,镀液温度达到(90±1)℃,pH值为5±0.5,机械搅拌转子转速为60 r/min,镀液中纳米粉体的浓度为35g/L时,镀层中能够沉积更多纳米粒子;而镀液中纳米粉体浓度为4.5g/L时,复合镀层的相对耐磨性较好。该工艺可用于农业机械关键工作零件表面强化。

It was researched that the nano SiC deposition in the coating of Ni-P is influenced by the surfactants,plating temperature,the pH of the electroless solution,rotorspeed,the concentration of nano SiC powder in the solution.The results show,the maximum of the nano SiC can be deposited when the anionic surfactant and the cationic surfactant were added at the same time,the plating temperature is 90±1℃,the pH of the solution is 5.0±0.5,the rotorspeed is 60 r/min,the concentration of nano SiC powder in the solution is 35g/L.The ware resistance of the coating is better when the concentration of nano SiC powder in the solution is 4.5g/L,the other parameters were kept as stated above.The technology can be used to improve the ware resistance of the agricultural machinery parts.