Piston ring

Provided is a piston ring having a thermal sprayed laminated coating tightly adhering thereto, which coating is excellent in wear resistance and scuffing resistance as well as less damaging to a mating material. The piston ring having a thermal sprayed base layer formed by thermal spraying of a mixe...

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Bibliographische Detailangaben
Hauptverfasser:	KUBO, TAKASUMI, AIZAWA, TAKESHI, OMIYA, TAKAO
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING 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 CYLINDERS DIFFUSION TREATMENT OF METALLIC MATERIAL ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL LIGHTING MECHANICAL ENGINEERING METALLURGY PISTONS SEALINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	Provided is a piston ring having a thermal sprayed laminated coating tightly adhering thereto, which coating is excellent in wear resistance and scuffing resistance as well as less damaging to a mating material. The piston ring having a thermal sprayed base layer formed by thermal spraying of a mixed powder including at least Mo powder, Ni-based self-fluxing alloy powder and Cu and/or Cu alloy powder; and a thermal sprayed surface layer including Cu, which is formed on a sliding surface of the piston ring after forming the thermal sprayed. The thermal sprayed base layer at least includes 50 to 80 % by mass of Mo, 1 to 12 % by mass ofCu and/or Cu alloy, and a remainder: Ni-based self-fluxing alloy, the area ratio of Cu and/or Cu alloy phase which appears on the sliding surface of the thermal sprayed base layer is 0.5 to 15%, and the thermal sprayed surface layer includes 70 to 100% by mass of Cu.