Metal surface treatment liquid, surface treatment method for metal bases, and metal base obtained by surface treatment method for metal bases

To provide a means for additionally increasing corrosion resistance in comparison to conventional zirconium-based chemical conversion coating films and bismuth-based chemical conversion coating films. A metal surface treatment liquid that is used for the purpose of forming a composite coating film,...

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Bibliographische Detailangaben
Hauptverfasser:	INOUE SHIGEKI, KAWAGOSHI RYOSUKE, TSUNEISHI AKINOBU, IKURA YUJI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR 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 ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	To provide a means for additionally increasing corrosion resistance in comparison to conventional zirconium-based chemical conversion coating films and bismuth-based chemical conversion coating films. A metal surface treatment liquid that is used for the purpose of forming a composite coating film, which contains Bi element and a group 4 element, on a metal base. This metal surface treatment liquid is characterized by being a fluorine-free aqueous treatment liquid, into which (A) a Bi element source, (B) a multimer of at least one group 4 element that is selected from the group consisting of Zr, Ti and Hf and (C) one or more aminopolycarboxylic acids or a salt thereof are added.