IMPROVED METHOD FOR NICKEL-FREE PHOSPHATING METAL SURFACES

The present invention relates to a method for substantially nickel-free phosphating of a metallic surface, wherein a metallic surface is treated one after the other with the following compositions:i) with an alkaline, aqueous cleaner composition which comprises at least one water-soluble silicate, a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	DAHLENBURG, Olaf, SEIDER, Lisa, KOLBERG, Thomas
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS 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 DETERGENT COMPOSITIONS DETERGENTS DIFFUSION TREATMENT OF METALLIC MATERIAL FATTY ACIDS THEREFROM INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:	The present invention relates to a method for substantially nickel-free phosphating of a metallic surface, wherein a metallic surface is treated one after the other with the following compositions:i) with an alkaline, aqueous cleaner composition which comprises at least one water-soluble silicate, andii) with an acidic, aqueous, substantially nickel-free phosphating composition which comprises zinc ions, manganese ions and phosphate ions.The invention also relates to the above cleaner composition itself and also to a metallic surface phosphate-coated by the above method, and to the use of said surface.