Synthesis of boron nitride from boron oxide using super-critical ammonia

Keiichi Yokoi, Kimihisa Ito, Masanori Tokuda

研究成果: Article査読

抄録

Hexagonal boron nitride was synthesized from boron oxide using super critical ammonia and solid CaO below the melting point of B2O3 by the following reaction: B2O3 (s)+2NH3 (super-critical fluid)+3CaO (s) = 2BN (s)+3Ca(OH)2 (s). The experiment was carried out at 623-753 K and the initial ammonia pressure was 3.0-40.0 MPa. The mean diameter of obtained BN particles was 0.2-0.3 μm. The yield of BN increased with increasing temperature, initial ammonia pressure and the addition of CaO. The thermochemical calculation showed that the CaO addition suppressed the decomposition loss of ammonia during the reaction.

本文言語English
ページ(範囲)645-648
ページ数4
ジャーナルMaterials Transactions, JIM
36
5
DOI
出版ステータスPublished - 1995
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)

フィンガープリント

「Synthesis of boron nitride from boron oxide using super-critical ammonia」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル