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

• Main Authors: OEZCAN OZLEM, GRUNDMEIER GUIDO, SCHUBACH PETER
• Format: Patent
• Language: English; Korean
• Published: 22.07.2015
• 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

본 발명은 플로딩, 분무 및/또는 함침에 의해 아연 염의 수용액을 함유한 수성 조성물로 금속 표면을 코팅하는 것으로서, 분무 또는 함침의 경우에, 기판의 초기 온도가 5 내지 400℃의 범위에 있으며, 플로딩의 경우에, 기판의 초기 온도가 100 내지 400℃의 범위에 있으며, 금속 표면 상에 내부식성 나노결정질 아연 옥사이드 층이 형성되는 것을 특징으로 하는 방법에 관한 것이다. 본 발명은 또한, 상응하는 수성 조성물, 나노결정질 아연 옥사이드 층, 및 코팅된 기판의 용도에 관한 것이다. 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.