A plasma sprayed Ni WC coating was cladded on the ZA111 alloy surface by a 5 kW CO 2 laser. Using SEM and X ray analyses, the microstructure of the laser melted zone was investigated, and the wear resistance of the laser treated samples was measured. Experimental results showed that the Ni Al intermetallic compounds Al 3Ni, Al 3Ni 2, AlNi and Ni 3Al are dominant in the laser melted zone. Meanwhile, some WC particles were melted during the laser melting, and they separated in carbides during the cooling. The microhardness is very high in the laser melted zone. The wear resistance of laser melted samples is 2.83 times high than the aluminum matrix and 1.75 times high than plasma aprayed samoles.