To improve the wear resistance of sliding shoes of shearers under oil-free condition,FeNiMo and FeNiMoSi coatings were prepared on 45 steel substrate by using the laser cladding technique.The phase composition and hardness of coatings were analyzed.It is found that the prepared coatings are compact in microstructure and have good metallurgical bonding with the substrate.The average hardness of FeNiMoSi is 438HV,which is about 2.8 times that of the substrate (153HV) and 1.1 times that of the FeNiMo coating (385HV),respectively.The dry-sliding tribological performances of the coatings were studied by reciprocating friction and wear tester,and the wear mechanism was discussed.The results show that the friction coefficients of the two coatings show a downward trend with the increase of load and sliding speed,the wear rate of the two coatings gradually increases with the increase of load.With the increase of sliding speed,the wear rate of FeNiMo coating firstly decreases and then increases,and the wear rate of FeNiMoSi coating gradually decreases.The wear mechanism of the coating is mainly abrasive wear,plastic deformation and slight oxidative wear.Overall,the FeNiMoSi coating shows better wear resistance compared with FeNiMo coating,because the addition of Si not only refines the grain,but also promotes the formation of the FeSi intermetallic phase.