COMPOSITE BORON NITRIDE MATERIAL AND PROCESS FOR ITS PRODUCTION

Title:

COMPOSITE BORON NITRIDE MATERIAL AND PROCESS FOR ITS PRODUCTION

Document Type and Number:

WIPO Patent Application WO/1990/004574

Kind Code:

A1

Abstract:

Graphite of a graphite molding can be substituted by bringing the molding into contact with a mixed gas of a vapor of an oxygen-containing boron compound and a nitrogen-containing gas and heating it to 1400 to 2200??C. On the basis of this principle is obtained a boron nitride-covered graphite wherein boron nitride firmly covers a graphite material or a boron nitride composite material wherein boron nitride is firmly bound to ceramic fibers. These composite materials can be used in a wide field as less expensive industrial materials such as jigs for molten metal, high-temperature electric materials, high-temperature structural materials, heat-resistant materials, heat-insulating materials, etc. utilizing the properties of boron nitride since neither delamination nor separation takes place between boron nitride and the composite material covered by it.

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Inventors:

KOSHIDA TAKAHISA (JP)

Application Number:

PCT/JP1989/001077

Publication Date:

May 03, 1990

Filing Date:

October 20, 1989

Export Citation:

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Assignee:

KAWASAKI STEEL CO (JP)

International Classes:

C04B41/45; C04B41/50; C04B41/52; C04B41/81; C04B41/87; C04B41/89; D01F11/12; (IPC1-7): C04B41/87; C01B21/064; C23C16/34; D01F9/08

Foreign References:

JPS60103091A	1985-06-07
JPS61236672A	1986-10-21

Other References: