The Ni60 coatings was prepared by means of supersonic plasma spraying on 45 # steel substrate, and it was subsequently treated by the induction remelting and induction remelting forced cooling, respectively.The microstructure, microhardness distribution and friction-wear properties were analyzed by OM, SEM, XRD, microhardness tester and pin-on-diskSfriction wearStester to investigate the evolutionScharacteristic of microstructure of Ni60 alloy coatings and its properties.The results showed that the three kinds of coating have greater different microstructures, the remelted treatment only by high-frequencySinduction make the microstructures refining of the coating,and the coating remelted by induction remelting forced cooling form directionalScrystal structure which show epitaxial growth. The hardness of spraying coating appeared a downward trend from inside to outside, and the other two coatings were slightly increased from inside to outside, so, despite the higher the average hardness of spray coating, but the surface hardness is lower than the other two kinds of coating. The three kinds of coating have all good wear resistance, but subsequent treatment make the friction coefficient of the coating increase obviously, and wear-resisting performance are significantly enhanced. The coating added forced cooling shows more excellent wear resistance especially, and its average wear rate is lower about 8.5 times than the spraying coating and about 2 times than induction remelting coating,respectively.