粉末冶金技术2025，Vol.43Issue(2)：180-184,5.DOI:10.19591/j.cnki.cn11-1974/tf.2023110004
纳米金刚石对聚晶立方氮化硼力学性能的影响
Effect of nano-diamond on mechanical properties of polycrystalline cubic boron nitride
摘要
Abstract
Polycrystalline cubic boron nitride(PcBN)was sintered at the high temperature of 1500℃under the pressure of 5.5 GPa,using cubic boron nitride(cBN)powders as the raw materials,Al powders and Si powders as the binders,and nano-diamond as the additive.The effects of nano-diamond mass fraction on the phase composition,microstructure,density,hardness,fracture toughness,and wear ratio of PcBN were investigated.The results show that,the addition of nano-diamond has the great influence on the performance of PcBN.When the diamond mass fraction is 5%,the relative density of PcBN reaches the maximum as 98.5%.Vickers hardness,fracture toughness,and wear ratio of the PcBN samples increase and then drop as the nano-diamond content increases.When the nano-diamond mass fraction is 5%,the hardness,fracture toughness,and wear ratio of PcBN reach the highest values,which are 47 GPa,4.89 MPa·m1/2,and 6350,respectively.关键词
聚晶立方氮化硼/纳米金刚石/高温/高压/力学性能Key words
polycrystalline cubic boron nitride/nano-diamond/high temperature/high pressure/mechanical property分类
冶金工业引用本文复制引用
张群飞,肖长江,马金明,汤黎辉,栗正新..纳米金刚石对聚晶立方氮化硼力学性能的影响[J].粉末冶金技术,2025,43(2):180-184,5.基金项目
2023鼎锐河南省科技重点研发专项(231111230500) （231111230500）
