AQUEOUS SURFACE CONDITIONER AND SURFACE CONDITIONING METHOD FOR PHOSPHATING TREATMENT

An aqueous surface conditioner for use in a phosphating treatment is provided which contains crystals having an average diameter of 5 mu m or less in an amount of at least 0.1 g/L. The crystals are selected to have a two-dimensional epitaxy that matches within 3 % of misfit with the crystal lattice...

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Bibliographic Details
Main Authors SUDA, ARATA, MORIYA, YOSHIO, TAKAGI, YASUSHI
Format Patent
LanguageEnglish
French
German
Published 25.11.2009
Edition7
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
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Summary:An aqueous surface conditioner for use in a phosphating treatment is provided which contains crystals having an average diameter of 5 mu m or less in an amount of at least 0.1 g/L. The crystals are selected to have a two-dimensional epitaxy that matches within 3 % of misfit with the crystal lattice of one phosphate coating selected from among (1) hopeite /Zn3(PO4)2<.>4H2O) and/or phosphophyllite (Zn2Fe(PO4)2<.>4H2O), (2) scholzite (CaZn2(PO4)2<.>2H2O) and (3) hureaulite (Mn5(PO4)2[PO3(OH]2<.>4H2O).
Bibliography:Application Number: EP20020714695