The Fujikura Cable Works Limited

Kohichi Saruwatari

Masatsugu Maejima

Kazuo Isawa

Takao Suzuki

Takayoshi Usuki

Tadashi Inoue

Takanori Hita

Seizo Murayama

Kozo Kounosu

Takeshi Saito

Akira Okazato

The surface of an aluminum conductor is roughened, for example, by blasting. A hydrophilic film such as a boehmite film, an anodic oxide film and a chemical conversion film is formed on the roughened surface. A protective film made of a wetting agent or a hydrophilic resin is formed on the hydrophilic film. The conductor may comprise a compressed aluminum conductor.

Aluminum conductor of low audible noise transmission

A process of treating an anodic oxide film wherein a base material of a valve metal is anodized to form the anodic oxide film thereon, which is then impregnated with a polymerizable organic metal compound and thereafter subjected to polymerization of the compound, whereby the micropores of the anodic oxide film are filled and sealed with the polymerized organometallic compound. According to this process, there is provided a base material having an anodic oxide film impregnated with polymerized organometallic compound which is excellent in heat resistance, heat radiance, and electrical insulation, and hence the base material is useful for the printed wiring board, electrically-insulative heat sink, heat-resistant insulated wire and the like.

Process of treating a nodic oxide film, printed wiring board and process

A method for the surface treatment of anodic oxide film is disclosed which comprises the steps of electrolyzing the porous surface of anodic oxide film of aluminium or aluminium alloy in an aqueous solution of ammonium thiomolybdate, optionally immersing it in an aqueous solution of ammonium thiomolybdate or alkali metal thiomolybdate and in dilute mineral acid or organic acid alternately, and subjecting it to a heat treatment so as to impregnate the micropores of the anodic oxide film with molybdenum sulfide and to fix the molybdenum sulfide therein.

Method for surface treatment of anodic oxide film

Growing community of inventors

Tokyo, Japan

Kohichi Saruwatari