Hard metal alloy with surface region enriched with tantalum, niobium, vanadium or combinations thereof and methods of making the same

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 allo...

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Bibliographische Detailangaben
Hauptverfasser:	GRAHAM, DONALD E
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	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.