Title:
CUBIC BORON NITRIDE ABRASIVE AND ITS PREPARATION
Document Type and Number:
Japanese Patent JPH05194938
Kind Code:
A
Abstract:
PURPOSE: To improve the efficiency of the process for producing cubic boron nitride from hexagonal boron nitride under conditions of high temperature and high pressure by using a large particle hexagonal boron nitride of ideal structure.
CONSTITUTION: (a) A reaction mixture comprising substantially ideal structure hexagonal boron nitride particles having at least about 10 μm average particle size is exposed to temperature and pressure conditions suitable for coverting ideal structure hexagonal boron nitride into cubic boron nitride for a sufficiently long time, (b) the reaction mixture is returned to an ambient conditions, and (c) cubic boron nitride is recovered from the reaction mixture.
Inventors:
FURANSHISU REIMONDO KORIGAN
BAABARA SUUIITENGU
SAMIERU ANTONII
BAABARA SUUIITENGU
SAMIERU ANTONII
Application Number:
JP19793692A
Publication Date:
August 03, 1993
Filing Date:
July 24, 1992
Export Citation:
Assignee:
GEN ELECTRIC
International Classes:
C01B21/064; C09K3/14; C01B35/00; C04B35/5831; C09C1/68; (IPC1-7): C09K3/14
Attorney, Agent or Firm:
Tokunji Ikunuma