Tungsten carbide is the main raw material for the manufacture of cemented carbide products, and its particle size has a decisive influence on the properties of cemented carbide products. The preparation of nano tungsten carbide has become the main way to improve the strength and toughness of cemented carbide products.

At present, with the shortage of tungsten mineral resources, especially the rising price of tungsten products in recent years, the rational comprehensive utilization of tungsten-containing phosphorus removal slag produced in the production process of ammonium paratungstate (APT) can not only create profits for the reuse of enterprise resources, but also create wealth for the country.

With the shortage of mineral resources, the national environmental protection policy has become increasingly stringent, and attention has been paid to the upgrading of scheelite smelting methods. The development and application of tungsten smelting processes with high metal yield and low energy consumption, which can achieve closed circuit recycling and zero emission, can not only create profits for enterprises, but also preserve wealth for future generations.

Tungsten titanium alloy prepared by plasma sintering as a sputtering target for copper wiring diffusion barrier layer has many requirements in structure and properties. A large number of experimental results show that the grain size and Ti-rich phase content of WTi alloy structure are the main factors affecting the performance of the barrier layer.