Synthesis of Cubic Boron Nitride by the Reaction of Li3 N and B2 O3
SU Zuo-Peng, DU Yong-Hui, JI Xiao-Rui, YANG Da-Peng, YANG Xu-Xin, GONG Xi-Liang, ZHANG Tie-Chen
National Laboratory for Superhard Materials, Jilin University, Changchun 130012
Synthesis of Cubic Boron Nitride by the Reaction of Li3 N and B2 O3
SU Zuo-Peng;DU Yong-Hui;JI Xiao-Rui;YANG Da-Peng;YANG Xu-Xin;GONG Xi-Liang;ZHANG Tie-Chen
National Laboratory for Superhard Materials, Jilin University, Changchun 130012
关键词 ：
81.20.Ka ,
81.05.Je ,
81.10.-h
Abstract ： Cubic boron nitride is synthesized by the reaction of Li3 N and B2 O3 under high pressure and high temperature (4.0--5.0GPa, 1350--1500°C). The minimum pressure of cBN formation is 4.0GPa. The present condition of cBN formation is clearly lower than the eutectic temperature of Li3 BN2 and BN in the Li3 N-hBN system (5.5GPa, 1610°C). The content of $c$BN in the sample increases, while the content of hBN decreases with the temperature and pressure. The maximum conversion rate (5.0GPa, 1500°C) is about 34%, which is higher than that in the hBN-Li3 N system. The cBN crystals are octahedral or tetrahedral in shape and approximately 20μm in diameter.
Key words ：
81.20.Ka
81.05.Je
81.10.-h
出版日期: 2006-08-01
:
81.20.Ka
(Chemical synthesis; combustion synthesis)
81.05.Je
(Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides))
81.10.-h
(Methods of crystal growth; physics and chemistry of crystal growth, crystal morphology, and orientation)
引用本文:
SU Zuo-Peng;DU Yong-Hui;JI Xiao-Rui;YANG Da-Peng;YANG Xu-Xin;GONG Xi-Liang;ZHANG Tie-Chen. Synthesis of Cubic Boron Nitride by the Reaction of Li3 N and B2 O3 [J]. 中国物理快报, 2006, 23(8): 2285-2287.
3 N and B2 O3 . Chin. Phys. Lett., 2006, 23(8): 2285-2287.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2006/V23/I8/2285
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2006, Vol. 23 
