The Research Trends of Improving Tungsten Carbide Properties

In the development processing, tungsten carbide encountered contradiction between strength and hardness, which is with high hardness but low strength, high strength but low hardness. WC particle size of tungsten carbide is always greater than its original particle size with traditional methods, and usually in a few microns.

However, many countries have encountered difficulties in the study of nano-carbide, the main problems are reflected in two aspects: First, the preparation of nano-WC-Co composite powder activity is very sensitive to temperature, in the high temperature will be immediately grown up. The current research and development trend is to improving the preparation of ultra-fine WC-Co composite powder method and improve the sintering processing. The compactness and uniformity of the tungsten carbide prepared by low pressure isostatic pressing sintering process are well, and the process has the advantages of short production cycle and small process loss.

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