MULTILAYER NON-STICK COATING OF IMPROVED HARDNESS FOR ALUMINUM ARTICLES AND ARTICLES AND CULINARY UTENSILS INCORPORATING SUCH COATING

A multilayer non-stick coating of improved hardness for aluminum articles includes an alumina-based hard first layer obtained by anodic oxidation of the aluminum article immersed in an alkaline solution. Micro-arcs are applied to the article by means of a high current and a high potential difference...

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Bibliographische Detailangaben
Hauptverfasser:	BUFFARD, JEAN-PIERRE, GARDAZ, CLAUDINE
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	APPARATUS FOR MAKING BEVERAGES APPARATUS THEREFOR 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 COFFEE MILLS DIFFUSION TREATMENT OF METALLIC MATERIAL DOMESTIC ARTICLES OR APPLIANCES ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FURNITURE HOUSEHOLD OR TABLE EQUIPMENT HUMAN NECESSITIES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL KITCHEN EQUIPMENT METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SPICE MILLS SUCTION CLEANERS IN GENERAL SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	A multilayer non-stick coating of improved hardness for aluminum articles includes an alumina-based hard first layer obtained by anodic oxidation of the aluminum article immersed in an alkaline solution. Micro-arcs are applied to the article by means of a high current and a high potential difference. A second layer based on polytetrafluoroethylene and chemical agents constitutes a primer for one or more polytetrafluoroethylene-based finish layers.