METHOD FOR COLORING ALUMINUM ANODIC OXIDE FILM

PURPOSE:To obtain various color tones which have not been attained by previously DC-anodizing an anodic oxide film at a specified voltage. CONSTITUTION:An aluminum anodic oxide film is formed by anodization. The film is electrolytically colored in an electrolytic bath contg. plural kinds of metals h...

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Bibliographische Detailangaben
Hauptverfasser:	HAGINO SEIJI, FUJITA TETSUJI
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 obtain various color tones which have not been attained by previously DC-anodizing an anodic oxide film at a specified voltage. CONSTITUTION:An aluminum anodic oxide film is formed by anodization. The film is electrolytically colored in an electrolytic bath contg. plural kinds of metals having a different voltage at which the essential deposition reaction occurs as their salts. In this case, the anodic oxide film is previously DC- anodized at an optional voltage higher than the anodization voltage and lower than 30V. Ni and Zn are used as the plural kinds of metals. Consequently, the color tone is optionally controlled and changed within the range determined by the metal to be used.