SURFACE CONDITIONING COMPOSITION, METHOD FOR PRODUCING THE SAME, AND SURFACE CONDITIONING METHOD

• Main Authors: INBE TOSHIO, YOMOGIHARA MASANOBU, WADA YUSUKE
• Format: Patent
• Language: English
• Published: 15.11.2007
• 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

PROBLEM TO BE SOLVED: To provide a surface conditioning composition having a surface conditioning function that is even more superior as compared with conventional surface conditioning compositions. SOLUTION: A surface conditioning composition is provided for use in surface conditioning of a metal prior to being subjected to a phosphate-based chemical conversion treatment, in which the surface conditioning composition has a pH of 3 to 12, and contains nearly spherical zinc phosphate particles having an average particle diameter from 0.05 μm to 3 μm, and in which the zinc phosphate particles are produced by mixing at least one zinc compound particle selected from the group consisting of zinc oxide, zinc hydroxide, and basic zinc carbonate with phosphoric acid and/or condensed phosphoric acid to make their reaction in an acidic aqueous solution having a pH lower than 7 perform, and dispersing and stabilizing by a dispersion means. COPYRIGHT: (C)2008,JPO&INPIT