SURFACE-TREATED AL OR AL ALLOY MATERIAL HAVING EXCELLENT WORKABILITY AND CORROSION RESISTANCE AFTER COATING

PURPOSE:To obtain a surface-treated Al (alloy) material having excellent workability and corrosion resistance after coating by forming an Fe-Zn alloy plating layer having a specified Fe content on a Zn-based plating layer having a specified Zn content. CONSTITUTION:A Zn-based plating layer having &g...

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Bibliographische Detailangaben
Hauptverfasser:	IKEDA TSUGUMOTO, TSURUNO AKIHIRO, FUJIMOTO HIDEO, TAKEE NAGISA, SATO HIROSHI, TAKEMOTO MASAO, HISAMOTO ATSUSHI
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:	PURPOSE:To obtain a surface-treated Al (alloy) material having excellent workability and corrosion resistance after coating by forming an Fe-Zn alloy plating layer having a specified Fe content on a Zn-based plating layer having a specified Zn content. CONSTITUTION:A Zn-based plating layer having >=50wt.% Zn content is formed on the surface of an Al (alloy) material and an Fe-Zn alloy plating layer having >=20wt.% Fe content is further formed on the Zn-based plating layer. When a middle layer in which the concn. ratio between Fe and Zn varies gradually is formed between both the plating layers, more excellent workability and corrosion resistance after coating are ensured.