Abstract This paper mainly studies the effect of CBN particle size and assembly method on PCBN performance when PCBN is synthesized under high temperature and high pressure. The results show that the particle size of CBN has a great influence on the performance of PCBN. The mixed particle size is better than the single particle size, and the wide range of mixed particle size is better than the narrow range. It is recommended to use CBN particles with a wide mixing size range when synthesizing PCBN, thereby effectively improving the accumulation state of particles, increasing the bulk density of crystal grains, and improving the performance of PCBN products. When Dmax/Dmax is closer to 1, the wear ratio and hardness of PCBN are lower. The assembly mode of double salt double carbon tube makes the synthesis temperature easy to control, the pressure is more uniform, and the uniformity of PCBN product structure is ensured, so it is superior to single salt carbon. The way the tubes are assembled. (Diamond and Abrasives Engineering, 2009, Issue 2)
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