Electrolysis: processes – compositions used therein – and methods – Electrolytic coating – Coating predominantly single metal or alloy substrate of...
Patent
1994-08-09
1995-05-23
Niebling, John
Electrolysis: processes, compositions used therein, and methods
Electrolytic coating
Coating predominantly single metal or alloy substrate of...
205201, C25D 1104
Patent
active
054178398
ABSTRACT:
Aluminum foils used as a material of electrodes in electrolytic capacitors are manufactured by a method which comprises a step of forming at first an initial internal oxide coating 5 to 50 .ANG. thick on the surface of the aluminum foils before they are electrochemically or chemically etched later. The aluminum foils are then subjected to high temperature heat treatment such that the whole thickness of the oxide coating does not exceed 70 .ANG..
REFERENCES:
patent: 4252575 (1981-02-01), Barnard
patent: 4276129 (1981-06-01), Kanzaki et al.
patent: 4470885 (1984-09-01), Randall et al.
patent: 4969974 (1990-11-01), Kunugihara et al.
MPEP 715, pp. 78-80.
Fujihira Tadao
Nakaya Hisatsugu
Sakaguchi Masashi
Tada Kiyoshi
Tamura Takashi
Mayekar Kishor
Niebling John
Showa Aluminum Corporation
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