金刚石与磨料磨具工程2024，Vol.44Issue(2)：185-192,8.DOI:10.13394/j.cnki.jgszz.2023.0090
结合剂比例和cBN粒度配比对PcBN复合材料微观结构和性能的影响
Effects of the ratio of binder and the ratio of cBN particle size on the microstruc-ture and properties of PcBN composites
摘要
Abstract
Polycrystalline cubic boron nitride composites were prepared under high-temperature and high-pressure con-ditions.The effects of bonding agent ratio and cBN particle size on the composition,microstructure,microhardness,and abrasive ratios of the PcBN composites were investigated using X-ray diffraction(XRD),field scanning electron micro-scopy(SEM),and energy dispersive spectroscopy(EDS).The experimental results showed that the PcBN composites performed better under sintering conditions of 5.5 GPa,1 400 ℃,and a 10-minute holding time,achieving a hardness of up to 22.7 GPa and an abrasion ratio of 149.2 at V(TiN0.3)∶V(AlN)=70∶30.Moreover,when the particle size combina-tion of cBN in PcBN composites is(0.5～1)μm∶(2～5)μm∶(5～10)μm=3∶5∶2,the packing density between particles reaches its peak,resulting in optimal performance.关键词
PcBN复合材料/高温高压/结合剂/粒度Key words
PcBN composite/high pressure and high temperature(HPHT)/binder/particle size分类
通用工业技术引用本文复制引用
邹芹,董培航,李艳国,袁振雄,武迪,罗永安..结合剂比例和cBN粒度配比对PcBN复合材料微观结构和性能的影响[J].金刚石与磨料磨具工程,2024,44(2):185-192,8.基金项目
河北省高等学校科学技术研究项目(ZD2021099). （ZD2021099）
