Boron-treated hard metal

Details Boron-treated hard metal Boron-treated hard metal

1989-03-06

1990-10-09

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75243, 75244, 75246, C22C 2904

Patent

active

049617800

ABSTRACT:
A hard, relatively non-brittle, cemented carbide body is made by sintering pressed grade carbide powders in the presence of a boron-containing material such as boron nitride. During sintering, appreciable quantities of boron migrate or diffuse into the body to become incorporated throughout the microstructure of the carbide resulting in the formation of a third quarternary phase comprised of tungsten, cobalt, boron and carbon.

REFERENCES:
patent: 2612442 (1952-09-01), Goetzel
patent: 2888355 (1959-05-01), Taylor
patent: 3171192 (1965-03-01), Ortner et al.
patent: 3215510 (1965-11-01), Kelly
patent: 3294877 (1966-12-01), Hammond
patent: 3359098 (1967-12-01), Teaford
patent: 3368882 (1968-02-01), Ellis et al.
patent: 3497368 (1970-02-01), Williams
patent: 3647576 (1972-03-01), Yamamura et al.
patent: 3690962 (1972-09-01), Rudy
patent: 3708355 (1973-01-01), Rudy
patent: 3811961 (1974-05-01), Weinstein et al.
patent: 3914473 (1975-10-01), Hale
patent: 4018631 (1977-04-01), Hale
patent: 4172162 (1979-10-01), Danzey
patent: 4224073 (1980-09-01), Sasaki et al.
patent: 4236926 (1980-12-01), Lindholm
patent: 4277283 (1981-07-01), Tobioka et al.
patent: 4279651 (1981-07-01), Fujimori et al.
patent: 4290807 (1981-09-01), Asai et al.
patent: 4334928 (1982-06-01), Hara
patent: 4342595 (1982-08-01), Bourdeau
patent: 4343651 (1982-08-01), Yazu et al.
patent: 4343865 (1982-08-01), Graham
patent: 4399168 (1983-08-01), Kullander et al.
patent: 4466829 (1984-08-01), Nishigaki et al.
patent: 4605440 (1986-08-01), Halverson et al.
patent: 4692385 (1987-09-01), Johnson
patent: 4693989 (1987-09-01), Sane
International Journal of Fracture, vol 15, No. 6, Dec. 1979, pp. 515-536.
Ceramics International 13 (1987) 99-103, Boron as Sintering Additive in Cemented WC-Co (or Ni) Alloys, P. Goeuriot, F. Thevenot, N. Bouaoudja, G. Fantozzi, Elsevier Applied Science Publishers Ltd., England, 1987.

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