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Vol.28, No.4, 343 ~ 350, 1990
Title
Preparation of Fine Boron Nitride Powders (1) ( Boron Nitride formation by Thermal Decomposition )
김수식Soo Sik Kim, 정은균Eun Kyun Jeung
Abstract
The hexagonal boron nitride which was obtained as a reaction product by the vapor phase reaction of BCl₃and NH₃was decomposed again thermally in the temperature range of 1100-1450℃ to synthesize boron nitride whiskers and powders. The effects of reaction conditions on the particle size and morphology of the hexagonal boron nitride were investigated by utilizing X-ray diffraction and SEM. The boron nitride whisker was obtained by thermal decomposition of the reaction product which was obtained at 300℃. The procedures of the BN formation are as follows: Amorphous--(BN)4H--BN. The reaction products obtained at 500℃ were decomposed thermally for 9 hours at 1200℃, the particle size and shape were 230㎚ and sphere-shaped, respectively.
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