In order to study and improve the tribological properties of Ni based coatings,three kinds of coatings,the NiCrBSi coating,the NiCrBSi30%WC coating by doping of 30% WC,the NiCrBSi30%WC15%Mo coating by codoping of 30% WC and 15% Mo were deposited on the surface of 316 stainless steel substrate by means of plasma spraying.The microhardness,morphology and microstructure of the assprayed coatings were tested and analyzed.Reciprocating wear test was conducted to investigate the tribological performance of the three coatings against GCr15 ball as the counterpart of rubbing pair under atmosphere condition.The results show that the doping of WC as well as codoping of WC and Mo improves the hardness of NiCrBSi coatings.NiCrBSi30%WC coating possesses the largest friction coefficient of 0502 0,following by NiCrBSi30%WC15%Mo coating,and NiCrBSi coating possesses the lowest friction coefficient of 0393 8.NiCrBSi 30%WC15%Mo coating shows the best wear resistance，and improving by 25% than the NiCrBSi coating,following by NiCrBSi30%WC coating.During the friction test,Fe transfer films are produced for all the three kinds of coatings when rubbing against GCr15 ball under atmosphere condition.The wear mechanism of NiCrBSi coating is mainly abrasive wear and fatigue spalling,while the main wear form of NiCrBSi30%WC and NiCrBSi30%WC15%Mo coatings is fatigue spalling.