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Volume 29 Issue 4
Sep 2015
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Chinese Journal of High Pressure Physics  > 2015  >  29(4): 263-267.
WANG Zhi-Gang, XU Liang, LI Xu-Hai, WANG Hai-Kuo, HE Duan-Wei, MENG Chuan-Min. Elastic Property of SiC-Diamond Composite under Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 2015, 29(4): 263-267. doi: 10.11858/gywlxb.2015.04.004
Citation: WANG Zhi-Gang, XU Liang, LI Xu-Hai, WANG Hai-Kuo, HE Duan-Wei, MENG Chuan-Min. Elastic Property of SiC-Diamond Composite under Hydrostatic Pressure[J]. Chinese Journal of High Pressure Physics, 2015, 29(4): 263-267. doi: 10.11858/gywlxb.2015.04.004
shu

Elastic Property of SiC-Diamond Composite under Hydrostatic Pressure

doi: 10.11858/gywlxb.2015.04.004
  • 1.

    National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics, CAEP, Mianyang 621999, China

  • 2.

    School of Material Science and Engineering, Henan University ofTechnology, Zhengzhou 450001, China

  • 3.

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

  • Received Date: 24 Jan 2014
  • Rev Recd Date: 01 Apr 2014
    Abstract
  • The longitudinal and shear sound velocities (vp and vs) of SiC-diamond composite under hydrostatic pressure were measured simultaneously in a multi-anvil apparatus, and the relationship between modulus and pressure was also obtained.vp and vs increase with increasing pressure in the pressure range of 0 to 1.4 GPa and keep stable at higher pressure.The variations of sound velocities are attributed to the closing procession of micro voids and cracks during compression.The bulk modulus of SiC-diamond composite is higher than the shear modulus at ambient pressure, whereas the bulk modulus increases faster than the shear modulus with increasing pressure and exceeds the shear modulus at 1.4 GPa.In the pressure range of 1.4 to 4.3 GPa, the bulk and shear modulus of SiC-diamond composite are about 360 and 350 GPa, respectively.

     

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