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KAWASAKI STEEL TECHNICAL REPORT
No.28 ( June 1993 )
Special Issue on Chemicals and
New Materials and Construction Materials

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Development and Application of High-Purity Hexagonal Boron Nitride (h-BN) Powder

Toshihiko Funahashi, Toshimitsu Koitabashi, Ryoji Uchimura, Takahisa Koshida, Akishige Yoshida, Takeshi Ogasawara
Synopsis :
Hexagonal boron nitride (h-BN), whose structure is a layered structure like graphite, is a material for use as advanced ceramics. The material of h-BN has unique and various features such as lubricity, heat resistivity, corrosion resistibity to molten metals, high electrical resistibity, and good machinability. Kawasaki Steel Corp. has endeavored to establish a production technique of h-BN powder of high purity for its new application, and now possesses optimized synthetic conditions for large-scale production of high-purity h-BN powder with controlled properties including the grain size. As a very unique application, high-purity h-BN powder for cosmetics has been developed for the first time in the world. Furthermore, coating reagents, in which h-BN powder is dispersed homogeneously in water, silicon oil, and organic solvent, have been also developed for the application of a solid lubricant at high temperatures.
TextiPDF: 9p./427kbj



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