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Chen X.,Key Laboratory for Green Manufacturing | Chen X.,Jiujiang University | Wang H.-T.,Key Laboratory for Green Manufacturing | Wang H.-T.,Jiujiang University | And 7 more authors.
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

WC-17Ni, ZYT10001A(WC-17%Co) and WCTN(WC-17%Co) powders fabricated by cladding, mechanical mixing, agglomerate-sintering method respectively were deposited on stainless steel substrate to obtain WC cermet coatings by cold spraying. Microstructure of the coatings was studied by scanning electron microscopy, phase composnent was investigated by means of X-ray diffraction, and the microhardness, elastic modulus and fracture toughness were measured by indentation method. The results show that the coatings depsited by using three kinds of powders exhibited dense microstructure. The phases of the feedstocks remained unchanged in the coatings. The microhardness, elastic modulus and fracture toughness of the coatings varied from (650.8 ± 40.4) to (1350.0 ± 115)HV0.3, (182.6 ± 66.6) to (309.9 ± 52.9)GPa and (13.12 ± 4.44) to (24 ± 1) MPa·m1/2, respectively, and ZYT10001A(WC-17%Co) coating had the highest value of microhardness and the lowest value of fracture toughness in the three coatings. Source

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