METHOD FOR DEPOSITING CORROSION-RESISTANT FILM ON SURFACE OF ALUMINUM OR ALUMINUM ALLOY

PROBLEM TO BE SOLVED: To provide a method for depositing a corrosion-resistant film on aluminum or an aluminum alloy by which a corrosion resistant film having low environmental load properties and excellent corrosion resistance equal to that by a chromate treatment method can be deposited. SOLUTION...

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Bibliographische Detailangaben
1. Verfasser:	INOGUCHI KAZUHIKO
Format:	Patent
Sprache:	eng
Schlagworte:	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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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a method for depositing a corrosion-resistant film on aluminum or an aluminum alloy by which a corrosion resistant film having low environmental load properties and excellent corrosion resistance equal to that by a chromate treatment method can be deposited. SOLUTION: In the method for depositing a film having corrosion resistance on the surface of a base material consisting of aluminum or an alminum alloy, the base material is dipped into a solution containing molybdic ions or tungstic ions, phosphoric acid and fluoride to deposit a corrosion resistant film on the surface of the base material. In this way, the corrosion resistant film having corrosion resistance equal to or above that by chromate treatment can be deposited on the surface of the base material.