| 摘要 |
PROBLEM TO BE SOLVED: To provide strong aluminum foil for an electrolytic capacitor that has a high rate of presence of a cubic crystal system and can form a deep pit in a depthwise direction. SOLUTION: In the aluminum foil for electrolytic capacitors and the method for manufacturing it; 90% or higher cubic crystal systems are obtained with a purity of 99.9%, the grain shape is extended in a rolling direction, and the aspect ratio of the grain diameter in a direction in parallel with the rolling direction to a direction perpendicular to the rolling direction is set to a range of 1.1-1.5. After heat treatment is made at a temperature of 500-600°C, rolling machining is made again with a working rate of 11-50%. COPYRIGHT: (C)2006,JPO&NCIPI
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