Volume 15 Issue 3
May. 2015
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ZHOU Zhen-Jun, LI Gong, YANG Zheng-Fang, CHEN Yu-Ru. The Effect of cBN Inclusions on the Densification and Microstructure of Fine-Grained Polycrystalline Diamond Compact[J]. Chinese Journal of High Pressure Physics, 2001, 15(3): 229-234 . doi: 10.11858/gywlxb.2001.03.011
Citation: ZHOU Zhen-Jun, LI Gong, YANG Zheng-Fang, CHEN Yu-Ru. The Effect of cBN Inclusions on the Densification and Microstructure of Fine-Grained Polycrystalline Diamond Compact[J]. Chinese Journal of High Pressure Physics, 2001, 15(3): 229-234 . doi: 10.11858/gywlxb.2001.03.011

The Effect of cBN Inclusions on the Densification and Microstructure of Fine-Grained Polycrystalline Diamond Compact

doi: 10.11858/gywlxb.2001.03.011
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  • Corresponding author: ZHOU Zhen-Jun
  • Received Date: 16 Jan 2001
  • Rev Recd Date: 19 Mar 2001
  • Publish Date: 05 Sep 2001
  • Commercially available synthetic powders of diamond and cubic boron nitride less than 0.5 m were used as the raw materials. Sintering of a fine-grained polycrystalline diamond compact with grains less than 1 m in size was successfully carried out by making a laminate on a WC/Co powder compact under sintering conditions of 6.0 GPa and 1 450 ℃ to 1 480 ℃ for 30 min. The effect of cBN inclusions on the densification and microstructure of the polycrystalline diamond compact was investigated in detail. Results showed that cBN played the role of suppressing abnormal grain growth during sintering. The wear resistance of sintering diamonds with different volume fraction of cBN under sintering conditions of 6.0 GPa and 1 360 ℃ to1 480 ℃ for 30 min was measured. The microstructure of the polycrystalline diamond compact was observed by scanning electron microscope (SEM).

     

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