C - Chemistry – Metallurgy – 25 – F
Patent
C - Chemistry, Metallurgy
25
F
204/86.5
C25F 3/04 (2006.01) H01G 9/04 (2006.01)
Patent
CA 1168619
AC ETCHING OF ALUMINUM CAPACITOR FOIL Abstract of the Disclosure Aluminum electrolytic capacitor foil is etched in a bath containing 0.75 to 1.8 M hydrochloric acid, 0.2 to 0.5 M aluminum chloride, and 0.05 to 0.4 M oxalic acid, while subjected to the action of alternating current of 16 to 36 Hz at 30 to 45°C in a single stage process.
390311
Baker Harold C.
Sprague Electric Company
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