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Chinese Journal of High Pressure Physics  > 2001  >  15(1): 75-79 .
XU Xiao-Wei, LIU Zhi-Fu, LIN Qian-Shao, LI Yu-Ping. Li3N Function in BN Synthesis[J]. Chinese Journal of High Pressure Physics, 2001, 15(1): 75-79 . doi: 10.11858/gywlxb.2001.01.012
Citation: XU Xiao-Wei, LIU Zhi-Fu, LIN Qian-Shao, LI Yu-Ping. Li3N Function in BN Synthesis[J]. Chinese Journal of High Pressure Physics, 2001, 15(1): 75-79 . doi: 10.11858/gywlxb.2001.01.012
shu

Li3N Function in BN Synthesis

doi: 10.11858/gywlxb.2001.01.012

  • Department of Inorganic Nonmetallic Material, University of Science & Technology Beijing, Beijing 100083, China

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  • Corresponding author: XU Xiao-Wei
  • Received Date: 27 Jun 2000
  • Rev Recd Date: 14 Aug 2000
  • Issue Publish Date: 05 Mar 2001
    Abstract
  • Li3N functions in the reactions between B4C and nitrogen containing compounds were investigated under high temperature. Experimental results showed that no hBN formed from the reaction between B4C and Si3N4, and only small amount of hBN formed from the reaction between B4C and NH4Cl. After Li3N was added into starting materials, the amount of hBN formed from both reactions increased obviously. The reaction between Li3N and B4C did not form hBN. All the results gave the conclusion that Li3N acted as catalyst in the reaction between B4C and nitrogen containing compounds. No hBN or cBN was obtained from B4C-Si3N4-Li3N system after a high temperature and high pressure treatment. The rule of choosing B source and N source for cBN synthesis at lower pressure also is discussed.

     

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    • References(10)
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