Abstract: The Ni-SiC composite coating with different volume fraction of SiC particles is manufactured by elestrodeposition. The effects of load and volume fraction of SiC particles on sliding wear under the condition of dry and lubrication sliding are studied. The results show that the wear resistance of Ni-SiC composite coating increases with the decrease of load and is superior to nickel coating whether dry sliding or lubrication sliding. Under the condition of dry sliding, Ni-SiC composite coating with 5.8% volume fraction of SiC particles get the most excellent wear resistance. Under the condition of lubrication sliding, the wear resistance of Ni-SiC composite coating increases with the increase of SiC particles in the layer.

Key words: Composites coating, Ni-SiC Aluminum alloy, Sliding wear