Tungsten Carbide Button Trends

1. Gradient structure carbide research

It also called multi-phase carbide, which has good corrosion-resistant and toughness. The principle is that it uses low-carbon carbide and obtain theηcarbide through vacuum sintering. Operating in the carburizing atmosphere to change the distribution of binder phase, it can improve different parts of carbide content. According to relevant documents and statistics, the lifespan of gradient structure tungsten carbide button is 40%-60% longer than standard version, and the wear-resisting will be obviously improved.

2. Non-uniform tungsten carbide

Most of tungsten carbide structure is uniform, except that some classic types are non-uniform. There are two types of non-uniform, one is mixed by WC grains (raw and fine), and another is mixed by high-Co and low-Co grains. Although non-uniform carbide has great toughness and abrasion resistant, it needs more researches and developments.

3. Add TaC

There are two methods to add TaC into tungsten carbide button. One is adding it directly in solid form (Ta, W, C), and another is adding TaC in elementary substance. They can obtain achievement equally. In addition, adding trace TaC will change the binder phase and grain boundary microstructure, which improve carbide impact-resisting and corrosion-resistant.

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