Other

Kentaro Abe

Hideo Yoshida

Masato Sone

Kiyohito Sakon

Takeshi Sako

Nobuyoshi Sato

To provide an anodic oxidation method, a titanium oxide film manufacturing method and a catalyst carrying method which is suitable, for example, for anodic oxidation of aluminum, titanium and catalyst carrying on the surface of alumite (registered trademark), capable of generating an oxide film at a low cost and rapidly by eliminating the use of a strongly acid or strongly basic electrolytic solution and using a carbonated water as an electrolytic solution, capable of controlling the sealing treatment of oxide film through a simple method, capable of effecting the oxide film dyeing and catalyst carrying rationally and easily, and capable of effecting the catalyst carrying safely and surely without eroding a base material. An object () to be treated is electrolyzed in an electrolytic solution received in a treatment vessel () serving the object () as an anodic electrode. It is an anodic oxidation method in which an oxide film is generated on the surface of the object (). A carbonated water of a predetermined acid concentration generated by dissolving a pressurized carbon dioxide in a predetermined quantity of water () is used as the electrolytic solution.

Anodic oxidation method and production for titanium oxide coating and method of supporting catalyst

A method for activating the surface of a base material and an apparatus thereof, which is suited to be utilized for pretreatment in electrochemical treatment such as, for example, electroplating or the like, in which the surface of a base material such as metal can be subjected to degreasing treatment and oxide film removing treatment simultaneously, efficiently and rationally, in which productivity can be enhanced and the equipment cost can be reduced, and in which a waste solution can be rationalized so that the solution can be reutilized and the environmental pollution can be prevented. A method for activating the surface of a base material in which the surface of a member to be treated is subjected to degreasing treatment or oxide film removing treatment. Pressurized carbon dioxide is dissolved in a predetermined quantity of water, thereby preparing an oxide film removing solution having a predetermined acidic concentration.

Method for activating surface of base material and apparatus thereof

The present invention relates to an anodic oxidation method and a treatment apparatus thereof which is suitable, for example, for generation of an oxide film and electropolishing of aluminum, capable of generating an oxide film at a low cost and rapidly by eliminating the use of electrolytic solution having a strong acid property and using a carbonated water as the electrolytic solution, capable of improving the oxide film generating operation and rationalizing the water discharging treatment, capable of preventing increase in temperature of the electrolytic solution without a need of a special equipment, capable of generating an oxide film in a stable manner and obtaining a good oxide film by eliminating the generation of oxide in the vicinity of an object to be treated, and capable of rationalization of the oxide film generating treatment and enhancing the productivity by using supercritical carbon dioxide. An object () to be treated is electrolyzed as an anode in an electrolytic solution. An oxide film is generated on the surface of the object (). A pressurized carbon dioxide is dissolved in a predetermined quantity of water (). An oxide film is generated by serving a carbonated water of a predetermined acid concentration as an electrolytic solution.

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Higashimurayama, Japan

Kentaro Abe