Hard metal alloy with surface region enriched with tantalum, nio

Details Hard metal alloy with surface region enriched with tantalum, nio Hard metal alloy with surface region enriched with tantalum, nio

1986-06-19

1988-11-15

Childs, Sadie L.

Stock material or miscellaneous articles

Composite

Of inorganic material

427249, 427255, 4272552, 4273761, B32B 900, B32B 1900

Patent

active

047849231

ABSTRACT:
Disclosed is a method of producing a hard metal alloy with a surface region enriched with a first component being at least one of the carbides, nitrides and carbonitrides of tantalum, niobium, vanadium or combinations thereof wherein the atomic percent ratio of a second component present in the alloy and being selected from the carbides, nitrides and carbonitrides of titanium, hafnium and zirconium and combinations thereof to the first component is in the range of from 0 to about 1.5. Also disclosed are hard metal alloys having said surface enriched region which can be used to produce cutting tools which are resistant to galling and crater formation.

REFERENCES:
patent: Re28485 (1975-07-01), Rix et al.
patent: 3999954 (1976-12-01), Kolaska et al.
patent: 4018631 (1977-04-01), Hale
patent: 4264682 (1981-04-01), Fuyama et al.
patent: 4269899 (1981-05-01), Fuyama et al.
patent: 4282289 (1981-08-01), Kullander et al.
patent: 4399168 (1983-08-01), Kullander et al.

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