SYNTHESIS OF BORON CARBONITRIDE

摘要

PURPOSE: To synthesize a large amount of boron carbonitride at a high reaction rate. ;CONSTITUTION: An alkaline metal cyanide is reacted with a boron halide to synthesize ordinary pressure phase boron carbonitride. Although an alkaline metal halide is deposited together with boron carbonitride, the deposited alkaline metal halide can readily be removed by water washing. The separation and removal can also be carried out by heating at ≥ the boiling point of the alkaline metal halide under the ordinary pressure or a reduced pressure to vaporize it.;COPYRIGHT: (C)1993,JPO&Japio