THERMALLY INSULATING COATING FOR AN ALUMINUM PISTON

A coated aluminum piston, for an internal combustion engine includes an area of the piston having a plasma oxide layer which is sealed with a coating that comprises a polysilazane-based, a water glass-based or polysiloxane-based polymer. A method of coating the piston is also provided.

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Bibliographische Detailangaben
Hauptverfasser:	CROMME, WOLFRAM, DANNENFELDT, MARGRIT, BLUMM, MONIKA
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES 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 COMBUSTION ENGINES CYLINDERS CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES 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 HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS 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:	A coated aluminum piston, for an internal combustion engine includes an area of the piston having a plasma oxide layer which is sealed with a coating that comprises a polysilazane-based, a water glass-based or polysiloxane-based polymer. A method of coating the piston is also provided.