Based on the electroless plating of nickel and phosphorus, the micro- and nano-diamond chemical composite plating process was studied. The effects of electroless plating solution, diamond type and concentration, surfactant type and content, and heat treatment temperature on the microhardness of the coating were investigated by orthogonal test. The results show that the factors affecting the hardness of the coating are diamond type, surfactant type, heat treatment temperature and surfactant content, while the plating solution type and diamond concentration have little effect on the hardness of the coating. The best process is: diamond is nano-diamond ash powder, anionic surfactant is added, heat treatment temperature is 350oC, surfactant content is 1:10, electroless plating solution B is selected, diamond concentration is 6.0g/L. (diamond and abrasive Abrasives Engineering, 2009, first issue)
Abstract On the basis of electroless Ni-P plating, the techniques of electroless Ni-P-diamond composite plating were 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 micro-hardness of coating was studied through orthogonal design. Results show that the factors affecting the hardness of coating are, in order of significance,sort of diamond,sort of surfactant,heat treatment temperature and content of surfactant. The effect of sort of electroless plating solution as well as the concentration of diamond is slight. The optimal parameters for the best hardness of plating are suggested as, adding nanodiamond and anionic surfactant, heat treatment temperature being 350 oC, the content of surfactant being 1:10, using the electroless plating bath B, and the concentration of nanodiamond being 6.0 g /L.
Abstract On the basis of electroless Ni-P plating, the techniques of electroless Ni-P-diamond composite plating were 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 micro-hardness of coating was studied through orthogonal design. Results show that the factors affecting the hardness of coating are, in order of significance,sort of diamond,sort of surfactant,heat treatment temperature and content of surfactant. The effect of sort of electroless plating solution as well as the concentration of diamond is slight. The optimal parameters for the best hardness of plating are suggested as, adding nanodiamond and anionic surfactant, heat treatment temperature being 350 oC, the content of surfactant being 1:10, using the electroless plating bath B, and the concentration of nanodiamond being 6.0 g /L.
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