Sintered compact for a machining tool and a method of producing the compact
First Claim
1. A sintered compact for use in a tool consisting essentially of:
- 80 to 20 volume % of high pressure from boron nitride; and
the balance being a matrix of at least one binder compound material selected from the group consisting of a carbide, a nitride, a carbonitride, a boride and a silicide of a IVa a Va transition metal of the periodic table, mixtures thereof and their solid solution compounds;
the matrix forming a continuous bonding structure in a sintered body and where the high pressure boron nitride is interspersed within a continuous matrix.
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Accused Products
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° C. for more than 3 minutes.
145 Citations
9 Claims
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1. A sintered compact for use in a tool consisting essentially of:
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80 to 20 volume % of high pressure from boron nitride; and the balance being a matrix of at least one binder compound material selected from the group consisting of a carbide, a nitride, a carbonitride, a boride and a silicide of a IVa a Va transition metal of the periodic table, mixtures thereof and their solid solution compounds;
the matrix forming a continuous bonding structure in a sintered body and where the high pressure boron nitride is interspersed within a continuous matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification