Diamond sinter, high-pressure phase boron nitride sinter, and pr

Details Diamond sinter, high-pressure phase boron nitride sinter, and pr Diamond sinter, high-pressure phase boron nitride sinter, and pr

1994-08-11

1996-07-16

King, Roy V.

Chemistry of inorganic compounds

Carbon or compound thereof

Elemental carbon

501 96, 51307, 419 11, 419 12, 419 13, 419 14, 419 26, 419 31, 419 35, 75244, B01J 306, C04B 3558

Patent

active

055364853

ABSTRACT:
A powder of diamond or high-pressure phase boron nitride core particles charged into a coating space as it is dispersed, and a precursor of a coat forming substance allowed to contact and/or impinge against the particles in the powder of core particles so that their surfaces are covered with the coat forming substance, thereby preparing coated diamond or high-pressure phase boron nitride particles which are subsequently sintered. The thusly produced diamond of high-pressure phase boron nitride sinter is composed of coated core particles of high performance that are superhard, uniform, dense and sintered firmly, and which have a controlled microstructure.

REFERENCES:
patent: 4505746 (1985-03-01), Nakai et al.
patent: 4636253 (1987-01-01), Nakai et al.
patent: 4647546 (1987-03-01), Hall, Jr.
patent: 4673414 (1987-06-01), Lavens et al.
patent: 4788166 (1988-11-01), Araki et al.
patent: 5037704 (1991-08-01), Nakai et al.

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