METHOD FOR ANODIC OXIDATION TREATMENT OF TI AND TI ALLOY

PURPOSE:To provide a method of forming such a uniform anodically oxidized film on the surface of Ti or Ti alloy that the film is smooth with >=1mum thickness and uniform without an irregular baking state and has excellent lubrication. CONSTITUTION:An anodized film is formed on the surface of Ti o...

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Hauptverfasser:	ONAKA TAKASHI, ITO SEISHIRO, YAMADA KIKUO, HIROCHI MICHIAKI, ISHIDA SHINICHI
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 provide a method of forming such a uniform anodically oxidized film on the surface of Ti or Ti alloy that the film is smooth with >=1mum thickness and uniform without an irregular baking state and has excellent lubrication. CONSTITUTION:An anodized film is formed on the surface of Ti or Ti alloy by anodic oxidation treatment of Ti and Ti alloy in an electrolytic bath. In this process, the electrolytic bath used consists of an aq. soln. containing an ammonium salt or sodium salt of at least one of org. acid optionally selected from among formic acid, acetic acid, propionic acid, tartaric acid, citric acid, sulfamic acid, glutamic acid, oxalic acid, sulfosalicylic acid, fumaric acid, and succinic acid, and the bath is prepared to be alkali.