Metal surface strengthening method by coating and working

A method for strengthening a surface of a metal member. The method includes the following steps in the sequence set forth: (a) coating the surface of the metal member with a carbon-based film having a thickness of not smaller than 0.2 µm; and (b) repeatedly applying a pressing force onto the surface...

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Bibliographische Detailangaben
Hauptverfasser:	JIMBO, YOSHIO, KUMAGAI, MASAO, YAKABE, FUMIYA
Format:	Patent
Sprache:	eng ; fre ; ger
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 COMBINED OPERATIONS DIFFUSION TREATMENT OF METALLIC MATERIAL GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MACHINE TOOLS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS OTHER WORKING OF METAL PERFORMING OPERATIONS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING UNIVERSAL MACHINE TOOLS
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Beschreibung
Zusammenfassung:	A method for strengthening a surface of a metal member. The method includes the following steps in the sequence set forth: (a) coating the surface of the metal member with a carbon-based film having a thickness of not smaller than 0.2 µm; and (b) repeatedly applying a pressing force onto the surface of the film-coated metal member in a condition of maintaining a Hertzian contact pressure of not lower than 2.5 GPa at the surface of the film-coated metal member. The pressing force is applied by roller, sliding or gear burnishing. The carbon based film can be a DLC (diamond like carbon) film.