This paper aims to improve the corrosion resistance of diamond/aluminum composite.The study involves preparing Ni-P coating on the surface of diamond/aluminum composite by chemical plat-ing,analyzing and testing the coating in terms of surface morphology,coating thickness,phase composi-tion,corrosion resistance and thermal conductivity by XRD,SEM,EDS.The results show that there are big differences in activities on the surfaces of aluminum matrix and diallmond.Nickel grows almost exclu-sively on the aluminum matrix.With the prolongation of plating time,nickel accumulates and grows a-round the diamond until the diamond surface is completely covered.The aluminum matrix and diamond surface are covered with bright,dense and continuous coating by plating,and with the phosphorus con-tent of 9.36%,which belongs to high phosphorus coating and good corrosion resistance.After nickel plated,the thermal conductivity of the composite decreases by 6.7%.
维普
万方数据