AC Etching of aluminum capacitor

Details AC Etching of aluminum capacitor AC Etching of aluminum capacitor

1980-09-15

1981-07-21

Tufariello, T. M.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

2041294, 20412995, C25F 304, C25F 314

Patent

active

042797144

ABSTRACT:
Aluminum electrolytic capacitor foil is etched in a bath containing 0.7 to 2.O M hydrochloric acid, 0.2 to 0.5 M hydrated aluminum trichloride, and 0.02 to 0.4 M phosphate ion while subjected to the action of alternating current at 35 to 55.degree. C.

REFERENCES:
patent: 3193485 (1965-07-01), Vincent
patent: 3887447 (1975-06-01), Sheasby et al.

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