Method of producing an abrasive product containing cubic...

Details Method of producing an abrasive product containing cubic... Method of producing an abrasive product containing cubic...

2005-07-19

2005-07-19

Jenkins, Daniel (Department: 1742)

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

C419S013000

Reexamination Certificate

active

06919040

ABSTRACT:
A method of producing an abrasive product consists of providing a mixture of a mass of discrete carbide particles and a mass of cubic boron nitride particles, the cubic boron nitride particles being present in the mixture in an amount such that the cubic boron nitride content of the abrasive product is 25% or less by weight, and subjecting the mixture to elevated temperature and pressure conditions at which the cubic boron nitride is crystallographically stable and at which substantially no hexagonal boron nitride is formed, in the presence of a bonding metal or alloy capable of bonding the mixture into a coherent, sintered product, to form the abrasive product. The bonding metal or alloy comprises a combination of a transition metal or a transition alloy and up to 40% by volume of the bonding metal or alloy of a second metal which is a stronger nitride or boride former than the transition metal or the transition metal alloy.

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patent: 774 527 (1997-05-01), None
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