Process for producing non-oxide powders

Details Process for producing non-oxide powders Process for producing non-oxide powders

1982-05-21

1984-07-17

Poer, James

Compositions: ceramic

Ceramic compositions

Carbide or oxycarbide containing

423297, 423345, 423409, 423411, 423440, 501 88, 501 91, 501 92, 501 93, 501 96, 501 97, C04B 3556, C04B 3558

Patent

active

044606974

ABSTRACT:
Non-oxide powders such as carbides, nitrides, carbides
itrides and borides are obtained by reducing an oxide powder in a reducing atmosphere, and after or concurrently with the reduction, treating the reduced powder in a carbonizing atmosphere, a nitrogenizing atmosphere, a carbonizing and nitrogenizing atmosphere, or a boronizing atmosphere. As the above oxide powder, there is used a brittle material obtained by rapid cooling of a melted oxide. The non-oxide powders obtained are utilized as a hard component of cemented carbides and cermet. These powders are fine particles having a particle size of 1.0 .mu.m or smaller and a high purity.

REFERENCES:
patent: 3716627 (1973-02-01), Middelhoek
patent: 3932594 (1976-01-01), Gortsema

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