Fraction and wear properties of crystalline Ni-W alloy coating prepared by electroplating

Ni-W alloy coating was prepared on the N80 steel surface with electroplating method,its coating coating was changed from amorphous structure into crystalline structure after the heat treatment of 500 ℃,and the elements spectrums and phase compositions were analyzed by SEM,EDS and XRD,respectively.The sliding wear properties of Ni-W coating were researched;its friction coefficient was tested;the surface morphologies after wear were observed by SEM,and the wear mechanism was discussed.The results show that the crystalline Ni-W coating is composed of Ni-based solid solution,its surface microhardness is 1 100,the roughness is 454.41 nm,the friction coefficient is about 0.52,Ni-W coating has strong anti-wear ability,the coating surface after wear mainly presents minor scrape phenomenon,the particle attrition is mainly caused by coating spalling,and the wear rate increases obviously.