CoCrC coating for surfaces liable to consumption

Metallic product coated with a matrix of Co/Cr-alloy with a dispersed hard phase consisting of Cr3C2. Preferably the Co/Cr matrix comprises 60 to 96% of Co and 40 to 4% of Cr while the coating comprises 40% ≤ Co < 70%, 25% ≤ Cr < 50%. The Cr3C2 content is comprised between 30 and 60%. Accordin...

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Bibliographische Detailangaben
Hauptverfasser:	GUARNONE, PAOLA, TIRANTI, GIANLUCA, CASALI, DONATELLA
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ALLOYS 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 FERROUS OR NON-FERROUS ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Metallic product coated with a matrix of Co/Cr-alloy with a dispersed hard phase consisting of Cr3C2. Preferably the Co/Cr matrix comprises 60 to 96% of Co and 40 to 4% of Cr while the coating comprises 40% ≤ Co < 70%, 25% ≤ Cr < 50%. The Cr3C2 content is comprised between 30 and 60%. According to a preferred embodiment of the invention, the Co/Cr matrix represents 45 to 70 wt% of the coating, preferably 55 to 70wt% and the Cr3C2 represents the 30-55wt%, preferably the 30-45wt%.