Preparation of TiC based Cermet with Different Ratio of Cu and Al

Abstract

TiC based cermet belongs to superhard tool material, which has high melting point, high hardness and excellent chemical stability. It is the preferred material for cutting tools and wear-resistant components. At the same time, it has excellent conductivity and is also the preferred material for electrode. In this experiment, TiC based cermet was prepared by atmosphere protection sintering method with TiC, Cu and Al as raw materials. The phase analysis was carried out by X-ray diffractometer(XRD), the microstructure was observed by scanning electron microscope (SEM), the element analysis was carried out by energy spectrometer, and the bending strength was tested by universal material tester. The different sintering temperature and the ratio of additive Cu and Al were systematically studied under the premise of controlling the total mass of TiC based cermet, which effect on microstructure and mechanical properties of TiC based cermet. The experimental results show that the bending strength of cermet increases obviously with the increase of copper content in a certain range, and the best mechanical properties of cermet are obtained when the ratio of Cu and Al is 6:4. With the increase of sintering temperature, the mechanical properties of TiC based cermet are significantly strengthened. When the sintering temperature reaches 1100 °C, the grain size is fine and uniform, and the comprehensive properties of the material are the best.