高压物理学报2018，Vol.32Issue(2)：52-58,7.DOI:10.11858/gywlxb.20170574
亚微米级聚晶金刚石的高温高压合成
Sub-Micron Polycrystalline Diamond Synthesis under High Temperature and High Pressure
摘要
Abstract
Due to its wide range of applications as a superhard material,polycrystalline diamond(PCD) has been used in oil-and gas-drilling,tool cutting,making of wear-resistant parts.At present,the average size of industrial synthetic PCD is above the micron dimension,but synthesizing the PCD with a size below the micron dimension remains a tough challenge.In this work,we succeeded synthesizing sub-micron polycrystalline diamond under high temperature and high pressure using the infiltrating technique.The samples were characterized by X-ray diffraction(XRD),scanning electron microscope (SEM),electron backscatter diffraction(EBSD),energy dispersive spectrometer(EDS)and hardness test.These results show that the hardness of the PCD thus synthesized is 57.0GPa under 5.5GPa and 1 500℃ when the hold time of temperature is 15 min;that the Co can disperse uniformly in PCD as a round hole used the bi-layered assembly so that the PCD demonstrates uniform and excellent performance;and that it is found from its sintering process that the temperature and holding time play an important role in its synthetic process.关键词
亚微米/合成/维氏硬度/高温高压/黏结剂/聚晶金刚石Key words
sub-micron/synthesis/Vickers hardness/high temperature and high pressure/binder/polycrystal-line diamond分类
数理科学引用本文复制引用
卢景瑞,贺端威,寇自力,刘腾,张雷雷,丁未,张强,王强,杨鸣,龚红霞..亚微米级聚晶金刚石的高温高压合成[J].高压物理学报,2018,32(2):52-58,7.基金项目
国家自然科学基金(11372143) （11372143）
