Funct. Mater. 2019; 26 (3): 556-560.
Investigation of the effect of nano-SiC on the hardness and wear resistance of Ni-SiC nanocomposite coatings
1Henan Institute of Technology, Henan, China
2School of Environmental Studies, China University of Geosciences, 430074 Wuhan, China
Ni-SiC nanocomposite coating for the surface of automobile drive shaft based on 40Cr steel was obtained, its microstructure, hardness, wear resistance and corrosion resistance was analyzed, and the effect of the nano-SiC mass concentration on the hardness and wear resistance of Ni-SiC nanocomposite coatings was studied. The results show that the Ni-SiC nanocomposite coating consists mainly of Ni and SiC, and its average hardness is about 558.4 HV, which is 1.5 times of 40Cr steel. The increase of the content of nano SiC is beneficial for improving the hardness and the wear resistance. When the SiC particle size is 70 nm and the mass concentration is 14 g/L, the Ni-SiC nanocomposite coating has the highest hardness and the best wear resistance.
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