Sintered compact for a machining tool and a method of producing

Details Sintered compact for a machining tool and a method of producing Sintered compact for a machining tool and a method of producing

1980-02-08

1982-06-15

Hunt, Brooks H.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

51307, 51309, 75236, 75237, 75239, 75240, 75241, 75242, 75244, 428552, 428565, B22F 300

Patent

active

043349285

ABSTRACT:
A sintered compact for use in a machining tool comprising 80 to 10 volume % of a high pressure form of boron nitride, and the balance a matrix of at least one binder compound material selected from the group consisting of a carbide, nitride, carbonitride, boride or silicide of IVa and Va transition metal of the periodic table, their mixtures as well as the solid solution of these compounds; the matrix forming a continuous bonding structure in the sintered body.
A method of producing the compact comprises preparing a mix of 80 to 10 volume % of a high pressure form of a boron nitride powder with 20 to 90 volume % of at least one powdered binder compound selected from the group consisting of a carbide, a nitride, a carbonitride, a boride and a silicide of a IVa, or a Va metal, mixtures thereof or solid solutions of these compounds, and sintering the mix under pressures more than 20 Kb at temperatures higher than 700.degree. C. for more than 3 minutes.

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Chem. Abs. 84:64205n, 1974.

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