SURFACE TREATMENT OF ALUMINUM ALLOY

PURPOSE:To improve the filiform corrosion resistance of an Al alloy and the adhesion of a coating film by subjecting the Al alloy to anodic oxidation, etc., in an electrolytic soln. contg. a surfactant and a silicate-based alkaline builder at a prescribed concn. CONSTITUTION:An electrolytic soln. co...

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Hauptverfasser:	FUJIMOTO HIDEO, USUI HIDEYOSHI
Format:	Patent
Sprache:	eng
Schlagworte:	APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES METALLURGY PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS
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Beschreibung
Zusammenfassung:	PURPOSE:To improve the filiform corrosion resistance of an Al alloy and the adhesion of a coating film by subjecting the Al alloy to anodic oxidation, etc., in an electrolytic soln. contg. a surfactant and a silicate-based alkaline builder at a prescribed concn. CONSTITUTION:An electrolytic soln. contg. a silicate-based alkaline builder at 0.5-5wt.% concn. and a surfactant is prepd. An Al alloy is subjected to anodic electrolysis or cathodic electrolysis and anodic electrolysis in the electrolytic soln.