Ac etching of aluminum capacitor foil

Details Ac etching of aluminum capacitor foil Ac etching of aluminum capacitor foil

C - Chemistry, Metallurgy

25

F

204/86.5

C25F 3/04 (2006.01) C25F 3/00 (2006.01)

Patent

CA 1170617

AC ETCHING OF ALUMINUM CAPACITOR FOIL Abstract of the Disclosure Aluminum electrolytic capacitor foil is etched in a bath containing 0.9 to 1.8 M hydrochloric acid, 0.2 to 0.5 M aluminum chloride, 0.03 to 0.3 M phosphoric acid, and 0.05 to 0.3 M nitric acid, while subjected to the action of alternating current at 28 to 45°C.

390233

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