Tungsten Boride

Tungsten boride is a black or gray hexagonal crystalline powder, its physical properties are as follows: chemical formula: WB, molecular weight: 194.65, density: 15.2g / cm3, melting point: 2660 ℃, the lattice constants a=3115nm, c=1.693nm, microhardness 3700kg / mm2, is a poorly soluble substance and having a metallic conductivity. It is often used as a wear-resistant coating and a semiconductor thin film wear parts.

The registry number of tungsten boride is as follows: CAS number: 12007-09-9, EINECS number: 234-498-8, MDL number: MFCD00049708, PubChem number: 24846684.

Producing tungsten boride can use electric furnace heated tungsten and boron to react directly then to obtain tungsten boride.
Tungsten boride synthesis method is as follows:
1. Tungsten and boron as raw material, making two of them to full mix and grind , above 1400 ℃ heating reacted WB.
2. Take 1mol tungsten and 1mol boron powder in a vacuum or in an argon atmosphere set in 1200 ~ 1300 ℃ sintering, available WB.
3. Using solid-phase method to produce tungsten boride, where stoichiometric metal tungsten and boron as raw martial after mixed, milled, shaped, heated at above 1400 ℃ to obtain WB.

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