ELECTRODE FOR ALUMINUN ELECTROLYTIC CONDENSER AND METHOD THEREOF

摘要

PURPOSE: An electrode foil for an aluminum electrolytic condenser and a manufacturing method thereof are provided to improve crystallization by removing a micro pore and a deformity of an oxide film. CONSTITUTION: A method of manufacturing an electrode foil for an aluminum electrolytic condenser comprises the following steps: a step(S21) aims to hydration-process an etched aluminum foil; a step(S22) aims to deposition-process an aluminum foil with a weak acid aqueous solution; a step(S23) aims to process a deposited aluminum foil with a first chemical conversion treatment; a step(S24) aims to heat-treat an aluminum foil; and a step(S25) aims to process an aluminum foil passing through the heat treatment step with a second chemical conversion treatment. [Reference numerals] (AA) Aluminum etching foil; (S21) Hydration process; (S22) Deposition process with weak acid; (S23) First chemical conversion treatment; (S24) Heat treatment; (S25) Second chemical conversion treatment; (S26) Drying