Aluminum as binder, sintering at high temperature and pressure conditions, polycrystalline cubic boron nitride sintered body

Adding an appropriate amount of adhesive may be to promote the sintering, reduce the sintering temperature and pressure required, and can improve the performance of the sintered body. Thus, the synthetic binder PCBN plays an important role. In this paper, a certain  Abrasive grinding  titanium nitride, cobalt and aluminum as a binder, sintering at high temperature and pressure conditions, polycrystalline cubic boron nitride sintered body, the sintering pressure is 5Gpa, the sintering  polycrystalline diamond  range of 1250 ℃ -1650 ℃, the obtained sintered samples were ground and polished observed and analyzed by SEM microstructure of the sintered body, combined with XRD analysis to analyze the sintering mechanism, sintered hardness test.