Zhuzhou Jinxin cemented carbide, CNC inserts, CNC cutting
tool, mining alloy, carbide rod, carbide mould, non-standard
carbide design, high quality carbide products create development,
create our mutual future.
Jinxin Cemented Carbide Partner
tungsten carbide structure details
Molecular WC has been investigated and this gas phase species has a bond length of 171 pm for There are two forms of WC, a hexagonal form, α-WC (hP2, space group P6m2, No. 187), and a cubic high-temperature form, β-WC, which has the rock salt structure. The hexagonal form can be visualized as made up of a simple hexagonal lattice of metal atoms of layers lying directly over one another (i.e. not close packed), with carbon atoms filling half the interstices giving both tungsten and carbon a regular trigonal prismatic, 6 coordination. From the unit cell dimensions the following bond lengths can be determined; the distance between the tungsten atoms in a hexagonally packed layer is 291 pm, the shortest distance between tungsten atoms in adjoining layers is 284 pm, and the tungsten carbon bond length is 220 pm. The tungsten-carbon bond length is therefore comparable to the single bond in W(CH3)6 (218 pm) in which there is strongly distorted trigonal prismatic coordination of tungsten.W12C.