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http://dx.doi.org/10.4191/KCERS.2009.46.1.053

Effect of MgB6 Addition on Synthesis of Hexagonal Boron Nitride  

Lee, Dae-Jin (Electronic Materials Laboratory, Korea Institute of Ceramic Engineering & Technology)
Jee, Mi-Jung (Electronic Materials Laboratory, Korea Institute of Ceramic Engineering & Technology)
Choi, Byung-Hyun (Electronic Materials Laboratory, Korea Institute of Ceramic Engineering & Technology)
Lee, Mi-Jai (Electronic Materials Laboratory, Korea Institute of Ceramic Engineering & Technology)
Cho, Nam-Hee (School of Materials Science and Engineering, Inha University)
Cha, Mi-Sun (Large Industry)
Publication Information
Journal of the Korean Ceramic Society / v.46, no.1, 2009 , pp. 53-57 More about this Journal
Abstract
The h-BN powder was synthesized by amorphous $B_2O_3$ and activated carbon at $1550^{\circ}C$ in nitrogen atmosphere, whose properties were examined according to $MgB_6$ addition. Amount of $MgB_6$ addition was varied in the range of $0{\sim}$10\;wt% of the initial mixture. It was observed that $MgB_6$ addition led to an increase in the amount and the grain size of h-BN and decrease in the amount of $B_4C$ forming. When $MgB_6$ added 5 wt%, the amount and crystallinity of h-BN increased as the holding time at the synthesis temperature was prolonged. It was also confirmed that the regularity of three-dimensional ordering of h-BN increases.
Keywords
Hexagonal boron nitride; Rhombohedral boron nitride; $MgB_6$; $B_4C$; Grain size;
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