Ni-P-金刚石化学复合镀层耐磨性能研究

Study on the anti-wear behavior of electroless Ni-P-diamond composite coatings

在镍磷化学镀的基础上,研究了微米、纳米金刚石化学复合镀工艺。采用正交试验方法,研究化学镀液、金刚石种类与浓度、表面活性剂种类与含量以及热处理温度对镀层耐磨性能的影响。通过超声搅拌,实验成功制备出具有优异耐磨性能的N i-P-金刚石复合镀层。结果表明:对镀层耐磨性影响明显的因素依次为表面活性剂的种类和含量,金刚石颗粒的含量和种类,而镀液的种类和热处理温度对镀层耐磨性的影响较小。并且,最佳工艺为:添加阴离子表面活性剂,含量为1∶15,复合颗粒为金刚石微粉,浓度为10 g/L,镀层热处理温度为400℃。

On the basis of electroless Ni-P plating, the techniques of electroless Ni-P-（ micro-, nano-） diamond composite plating was studied. The effect of electroless plating solution, the sort and concentration of diamond, the sort and content of surfactant and heat treatment temperature on the wear resistance of coating was studied through orthogonal design. Using ultrasonic wave on electroless composite plating, an electroless Ni-P-diamond composite coating with excellent wear resistance was obtained. Results show that the factors affecting the wear resistance of coating are in an order of sort of surfactant, content of surfaetant, concentration of diamond and sort of diamond, respectively. And the effect of sort of electroless plating solution and heat treatment temperature is slight. Furthermore, the optimal parameters are suggested as：when adding anionic surfactant, the content is 1： 15; when adding diamond micropowder, the concentration is 10 g/L; the heat treatment temperature is 400 ℃.