SLIDING WEAR OF Ni-SiC COMPOSITE COATING ON THE SURFACE OF ALUMINUM ALLOY

Ding Yutian  Dai Lei  Yin Jianjun  Xu Guangji  Kou Shengzhong  Ding Zongfu

(Lanzhou University of Science and Technology)

La Peiqing

(Lanzhou Institute of Chemical Physics, The Chinese Academy of Sciences)

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  Sliding wear  Ni-SiC Aluminum alloy

Received 20030204, received in revised form 20030816