PISTON RING WITH CHROMIUM SOLID PARTICLE WEAR PREVENTION LAYER AND CORROSION RESISTANT FLANK SURFACE

There is provided a coated piston ring having a main body composed of chromium steel with more than 10 wt.% of chromium which main body has an inner circumferential surface a first flank surface a second flank surface and an outer circumferential surface wherein the first flank surface comprises a n...

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Bibliographische Detailangaben
Hauptverfasser:	ESSER PETER KLAUS, HERBST DEDERICHS CHRISTIAN, DÜRDOTH STEFAN, URBATZKA WALDEMAR
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR 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 ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES 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 PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS 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:	There is provided a coated piston ring having a main body composed of chromium steel with more than 10 wt.% of chromium which main body has an inner circumferential surface a first flank surface a second flank surface and an outer circumferential surface wherein the first flank surface comprises a nitride diffusion layer with a layer thickness of 5 300 µm a nitride connecting layer arranged immediately above the latter with a layer thickness of 0.5 15 µm and an oxide layer arranged immediately above the latter with a layer thickness of 0.05 3 µm the second flank surface comprises the nitride diffusion layer and the outer circumferential surface comprises the nitride diffusion layer and a chromium solid particle layer arranged above said nitride diffusion layer with 0.1 30 vol.% of solid particles in relation to the total volume of the chromium solid particle layer.