Characteristic
Tungsten borides are compounds of tungsten and boron. Their most remarkable property is high hardness. The Vickers hardness of WB or WB2 crystals is ~20 GPa and that of WB4 is ~30 GPa for loads exceeding 3 N.
WB2 has the same hexagonal structure as most diborides (AlB2, MgB2, etc.). WB has several forms, α(tetragonal), β (orthorhombic) and δ (tetragonal).
.jpg "Tungsten Diboride (WB2)-Powder")
.jpg "Titanium Pentoxide (Ti3O5)-Piece")
.jpg "Tantalum metal (Ta)-Single crystal")
.jpg "Tungsten Metal (W)-Granules")
.jpg "Aluminum Antimonide (AlSb)-Pieces")
.jpg "Antimony Telluride (III)(Sb2Te3)-Pieces")
.jpg "Ammonium Hexachloroiridate(IV) ((NH4)2IrCl6)-Crystalline")
