Toyo Aluminium Kabushiki Kaisha

Sumitomo Electric Industries, Limited

Toyo Aluminum Kabushiki Kaisha

Masahiko Kawai

Jun Kusui

Tohru Kimura

Yoshinobu Takeda

Akiei Tanaka

Yusuke Odani

Mitsuo Sasaki

Masashi Mehada

Osamu Iwao

Hiroshi Tanimoto

Aluminum composite material

The invention provides a process for preparing a large-sized P/M aluminum alloy product comprising:

Method of forming large-sized aluminum alloy product

Improved method for producing anode aluminum foils for electrolytic condensers used in low and intermediate voltage applications in which a hard tempered aluminum foil consisting of 99.9 to 99.99% pure aluminum added with 0.010 to 0.25% by weight of copper is electrolytically etched in an aqueous solution of neutral chlorides such as sodium chloride, aluminum chloride or potassium chloride.

Method for producing anode aluminum foils for electrolytic condensers

Aluminum foil for an electrode of an electrolytic capacitor is disclosed. The foil comprises at least one core layer adapted to prevent the growth of pits by electrolytic etching, and outer layers formed on both surfaces of the core layer. A large number of etching pits are produced in the outer layers. In a modification, the core layer contains more iron than the outer layers. Again in a modification, the core layer is covered or contained with aluminum oxides or hydroxides.

Aluminum foil for an electrode of an electrolytic capacitor

Growing community of inventors

Nara, Japan

Masahiko Kawai