NO-RINSE PRETREATMENT METHODS AND COMPOSITIONS FOR METAL SURFACES

• Main Authors: GUYER, KENDALL, L, HE, LINGYUN, MELZER, JEFFREY, I, CARTER, CHRISTOPHER, M, EODICE, ANDREA, KEYS, CHISHOLM, BRET, HUNTER, MATTHEW, M, SU, SHIUIN, H, WHISENHUNT, DONALD, W., JR
• Format: Patent
• Language: English; French; German
• Published: 02.01.2008
• Subjects: 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; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

Conversion and passivation coatings and methods for metal surfaces such as steel and aluminum are disclosed. The coating compositions comprise an aqueous sol of cerium oxide and/or silica particles and a ureido silane compound. The methods of the invention comprise contacting the requisite metal surface with the coating composition.