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) H01G 9/04 (2006.01)

Patent

CA 1169021

Abstract of the Disclosure Aluminum electrolytic capacitor foil is etched. in a bath containing 0.7 to 2.0M hydrochloric acid, 0.2 to 0.5M hydrated aluminum trichloride, and 0.02 to 0.4M phosphate ion while subjected to the action of alterna- ting current at 35 to 55°C.

385454

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