Tungsten Carbide (WC)-Pellets

Characteristic

Tungsten carbide is a compound made of tungsten and carbon.The formula is WC.It is a black hexagonal crystal with metallic luster and a hardness similar to that of diamond. It is a good conductor of electricity and heat.Tungsten carbide is insoluble in water, hydrochloric acid and sulfuric acid, but soluble in a mixture of nitric acid and hydrofluoric acid.Pure tungsten carbide is fragile, if a small amount of titanium, cobalt and other metals, can reduce brittleness.

Chemical formula：WC

Molar mass：195.85 g·mol⁻¹

Appearance：Grey-black lustrous solid

Density：15.63 g/cm³

Melting point：2,785–2,830 °C (5,045–5,126 °F; 3,058–3,103 K)

Boiling point：6,000 °C (10,830 °F; 6,270 K) at 760 mmHg

Solubility in water：Insoluble

Solubility:4Soluble in HNO3, HF

Magnetic susceptibility (χ)1·10−5 cm3/mol

Thermal conductivity：110 W/(m·K)

Crystal structureHexagonal, hP2

Application

It is widely used in high speed cutting tools, kiln structure materials, jet engine components, cermet materials, resistance heating elements and so on.

Used in manufacturing cutting tools, wear - resistant parts, copper, cobalt, bismuth and other metal melting crucible, wear - resistant semiconductor film.

Used as super hard cutting tool material, wear - resistant material.It can form a solid solution with many carbides.WC-TiC-Co carbide tools have been widely used.It can also be used as a modified additive for carbides of nbc-c and tac-c ternary systems, which can not only reduce sintering temperature, but also maintain good properties, and can be used as aerospace materials.

Tungsten carbide (WC) powder was synthesized from tungsten anhydride (WO3) and graphite in a reductive atmosphere at a high temperature of 1400 ~ 1600℃.Dense ceramic products can be prepared by hot pressing sintering or hot isostatic pressing sintering.