Method of producing a composite compact of cBN and WC-Co

Details Method of producing a composite compact of cBN and WC-Co Method of producing a composite compact of cBN and WC-Co

1985-09-16

1986-06-24

Lechert, Jr., Stephen J.

Powder metallurgy processes

Powder metallurgy processes with heating or sintering

Metal and nonmetal in final product

419 23, 75238, 75244, 264 60, 264332, 501 93, 501 96, B22F 300

Patent

active

045966931

ABSTRACT:
A method of producing a composite compact of cBN and WC-Co, comprising: mixing fine particles of cBN with a minor part of titanium carbide, the former being in an amount of 60-80% and the latter 40-20%, correspondingly, of the combined volume, putting the mixture in an intimate contact with a composite of WC-Co, heating the whole to a temperature high enough to cause an outflow of a liquid phase from said composite and infiltration thereof into said mixture under a pressure-temperature condition where cubic boron nitride is crystallographically stable, interjoining adjacent particles of cBN and titanium carbide, and as a whole to the composite of WC-Co, and recovering the integrated product of cBN, titanium carbide and WC-Co.

REFERENCES:
patent: 4236926 (1980-12-01), Lindholm et al.
patent: 4334928 (1982-06-01), Hara et al.
patent: 4342595 (1982-08-01), Bourdeau
patent: 4403015 (1983-09-01), Nakai et al.
patent: 4442180 (1984-04-01), Hara et al.
patent: 4505746 (1985-03-01), Nakai et al.

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