Alloy used for joining to cemented carbide, and its composite ma

Details Alloy used for joining to cemented carbide, and its composite ma Alloy used for joining to cemented carbide, and its composite ma

1998-07-16

2000-12-19

Jones, Deborah

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

428679, 428469, 420435, 420459, 420580, 420581, 228121, 2281221, 2281245, B32B 1504

Patent

active

061625515

ABSTRACT:
A joining alloy of the invention is based on Co, Ni, or their alloy, and contains 1.0 to 2.3% by mass of C and 15.5 to 34.7% by mass of W. Using HIP, the joining alloy in the form of a casting or powders is integrated with a WC--Co or WC--Ni type cemented carbide via diffusion joining. Using HIP, it is also possible to obtain a composite material having an integral structure in which a cemented carbide and the joining alloy, and the joining alloy and steel are joined together via diffusion joining. The joining alloy may additionally contain up to 30% by mass of Fe, up to 3% by mass of Si and up to 3% by mass of Mn as well as up to 10% by mass of at least one selected from Cr, Mo, V, Nb, Ti, Zr, and Ta. It is thus possible to obtain a joining alloy having an improved joining strength without producing a brittle phase therein even upon joined to the WC--Co or WC--Ni type cemented carbide, and its composite material.

REFERENCES:
patent: 3630699 (1971-12-01), Catlin et al.
patent: 4129444 (1978-12-01), Dreyer et al.
patent: 4280841 (1981-07-01), Ito et al.
patent: 4911768 (1990-03-01), Dong et al.
Weber et al.; Components from cobalt. Hard alloys for galvanization of steel strip, Deloro Stellite, 1997, 4, 65-69. (No Month).
Knotek et al.; The formation of tungsten carbide in cobalt base wear resistant coating alloys, thin solid films, 1976, 39, 263-8, (No Month).

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