Chemical Properties of Nano-Tungsten Carbide Powder

Nano-tungsten carbide powder is a high purity, uniform particle size, good dispersion and high surface energy and chemical activity of the material, it is also a high acid resistance, hardness, insoluble in cold water and other new properties of high performance materials. Nano-tungsten carbide powder is mainly used in the production of hard alloy and a variety of hard surface materials.

 Nano-tungsten carbide powder can make cemented carbide has many excellent features. Nano-cemented carbide has higher strength, hardness and wear resistance than ordinary cemented carbide. The quality of nano-tungsten carbide powder directly affects the quality of nano-cemented carbide.

Preparation of nano-tungsten carbide powder can be divided into solid-phase method, gas phase method, liquid phase method three categories, including spray conversion method, in situ reduction carbonization method, mechanical alloying method and other methods.

The traditional industrialized production process is divided into the following steps: Ammonium paratungstate → Rotary calcination → Tungsten oxide → Hydrogen reduction furnace → Tungsten → carbon tube furnace carbonization → to achieve the production of nano-tungsten carbide. In the preparation process of nano-tungsten carbide powder, the quality control of nano-tungsten carbide powder should start with the raw material APT, to ensure the stability, dispersion and uniformity of the raw materials, and need to add appropriate inhibitors to further ensure the nano-tungsten carbide powder Stable preparation.

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