METHOD FOR COATING METALLIC SURFACES WITH NANOCRYSTALLINE TIN OXIDE LAYERS, AQUEOUS COMPOSITIONS THEREFOR AND USE OF THE SURFACES COATED IN THIS WAY

• Main Authors: GRUNDMEIER GUIDO, SCHUBACH PETER, ÖZCAN ÖZLEM
• Format: Patent
• Language: English
• Published: 08.10.2015
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; 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 COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; CORRECTING FLUIDS; DIFFUSION TREATMENT OF METALLIC MATERIAL; DYES; FILLING PASTES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; USE OF MATERIALS THEREFOR; WOODSTAINS

A method for coating metallic surfaces with an aqueous composition, which contains an aqueous solution of a zinc salt, by flooding, spraying and/or immersion, wherein, for spraying or immersion, the initial temperature of the substrate lies in the range from 5 to 400° C., in that, for flooding, the initial temperature of the substrate lies in the range from 100 to 400° C. and in that an anticorrosive nanocrystalline zinc oxide layer is formed on the metallic surface. Corresponding aqueous composition, the nanocrystalline zinc oxide layer and the use of the coated substrates are also disclosed.