Boron nitride sinter and process for its production
AssigneeKabushiki Kaisha Kouransha
InventorsMasazumi Nakashima, Hiroshi Nakawara, Suminiko Kurita
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Abstract
The present invention relates to a high-strength BN single sinter or a high-strength composite sinter consisting of BN and other ceramics, and a process for its production. The present invention is characterized in that an amorphous BN powder or a powder capable of producing armorphous BN in the course of the sintering step is used as a part or whole of a starting material for a BN component. A boron nitride sinter obtained according to the present invention can be effectively utilized, for instance, as an electronic component part.
Claims4
A process of producing a sintered shape article comprising boron nitride, which comprises forming a starting powder mixture comprising at least 5% by weight of amorphous boron nitride;
- shaping said powder into a shape corresponding to the article to be produced;
- and subjecting said shape to sintering conditions, comprising substantially atmospheric pressure, under a reductive nitriding atmosphere.
A process of producing a sintered shaped article comprising boron nitride, which comprises forming a starting powder mixture comprising a material which is capable of producing at least 5% by weight of amorphous boron nitride based on the starting powder mixture under sintering conditions;
- shaping said powder into a shape corresponding to the article to be produced;
- and subjecting said shape to sintering conditions, comprising substantially atmospheric pressure, under a reductive nitriding atmosphere.
Dependencies are inferred from the claim text.