Wear resistance has a strong directivity, the application is limited

Cubic boron nitride (referred to as CBN) is developed out of the mid-fifties superhard material hardness only to diamond, it has a high hardness, high thermal stability and high chemical inertness, but its hardness, wear resistance, which are highly directionality of application is limited. To compensate for the lack of a single crystal cubic boron nitride, the relevant researchers developed in the seventies  cubic boron nitride cubic boron nitride (referred to as PCBN), which not only has a single crystal of cubic boron nitride of high hardness, high wear resistance, etc. while   polycrystalline diamond of its anisotropy. Polycrystalline cubic boron nitride in accordance with the cubic boron nitride particles and a binder composed of a certain percentage of the sintering temperature and pressure conditions.