Abstract：Chemical plating was used to prepare the nickel-artificial diamond powder, and the best formula for preparing uniform and dense coating was found by using the method of orthogonal experiment: the concentration of nickel sulfate is 32 g/L, the concentration of sodium dihydrogen phosphate is 32 g/L, the concentration of citrate is 30 g/L, the concentration of thiourea is 0.002 g/L, pH value of the bath is 4.5, plating temperature is 80 ℃ and plating time is 1.5 h. SEM, EDS and optical microscopy were used to analyse the surface morphology and energy spectrum of artificial diamond powder. It was confirmed that the preparation of Ni coated complex powder by this chemical plating is optimal.
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2014, Vol. 24 
