2013•Materials for Mechanical EngineeringRequires access

Effects of Sintering Temperature on the Microstructure and Properties of (Ti,W,Mo)C-Ni Cermet

Xingxiang Zhang

Abstract

(Ti,W,Mo)C pre-alloyed solid solution powders were produced by carbothermal reduction method and(Ti,W,Mo)C-Ni cermet was prepared by powder metallurgy method.The effects of sintering temperature on compactness,microstructure and properties of cermet were studied.The results show that in the range of 1 410-1 470℃,the compactness of cermet gradually improved and then decreased slightly,and the hardness rose,with the increase of sintering temperature.At 1 450 ℃,the cermet with homogeneous compact microstructure and fine grains,had the best comprehensive mechanical properties,a transverse rupture strength of 1 751 MPa and a hardness of 91.3HRA.

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Key concepts: Cermet, Materials science, Sintering, Microstructure, Metallurgy, Powder metallurgy, Homogeneous, Composite material