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Volume 32 Issue 2
Jan 2018
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Chinese Journal of High Pressure Physics  > 2018  >  32(2): 023302.
LU Jingrui, KOU Zili, LIU Teng, ZHANG Leilei, DING Wei, ZHANG Qiang, WANG Qiang, YANG Ming, GONG Hongxia, HE Duanwei. Sub-Micron Polycrystalline Diamond Synthesis under High Temperature and High Pressure[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023302. doi: 10.11858/gywlxb.20170574
Citation: LU Jingrui, KOU Zili, LIU Teng, ZHANG Leilei, DING Wei, ZHANG Qiang, WANG Qiang, YANG Ming, GONG Hongxia, HE Duanwei. Sub-Micron Polycrystalline Diamond Synthesis under High Temperature and High Pressure[J]. Chinese Journal of High Pressure Physics, 2018, 32(2): 023302. doi: 10.11858/gywlxb.20170574
shu

Sub-Micron Polycrystalline Diamond Synthesis under High Temperature and High Pressure

doi: 10.11858/gywlxb.20170574

  • Institute of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China

  • Received Date: 03 May 2017
  • Rev Recd Date: 09 May 2017
    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 1500℃ when the hold time of temperature is 15min; 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.

     

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