Abstract: Ni-Fe alloy coatings with different Fe contents were deposited on the surface of LY12CZ aluminium alloy by using electrodeposition method.The effect of Fe content on the microhardness,friction and wear resistance of the coatings was investigated.The wear mechanism was studied according to wear morphology.The results show that the microhardness increased,the static friction coefficient diminished and the wear resistance strengthened with the increase of Fe content in terms of 12.63at% Fe.However,when Fe content increased from 12.63at% to 2359at%,there was some increment of friction coefficient and a little reduction of microhardness and wear resistance.The main wear mechanism of Ni coating was microploughing,which was gradually transformed to microcutting as Fe content increased.