Abstract：In order to improve the wear resistance and service life of journal, the basic research on the surface coating of metal materials and its tribological properties was carried out. Ni-P-SiC composite coatings with SiC particles up to 14.66 wt% were prepared by a process combination of electrophoretic deposition and chemical coating. The composite coating layers in coating state and after heat treatment were examined and dry friction and water-lubricated friction tests were performed. The results showed that the hardness and dry friction wear resistance of the composite coating layer increased and then decreased as the heat treatment temperature increased, which was related to the recrystallization of the base metal. Both the coating state under water-lubricated conditions and the composite coating after heat treatment can achieve a low friction state with a friction coefficient as low as 0.015.
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2023, Vol. 