The aluminum alloy material and its production manner for the electrolytic condenser, production manner of the anode material for the electrolytic condenser and the electrode material for the electrolytic condenser and purity

摘要

PROBLEM TO BE SOLVED: To provide an inexpensive aluminum alloy material for electrolytic capacitor having high electrostatic capacity, its manufacturing method, and the like.;SOLUTION: The aluminum alloy material has aluminum purity of 99.9 mass% and contains, by mass, Si of 0.006 to 0.025%, Fe of 0.006 to 0.025% and Cu of 0.0005 to 0.008%. Among Al-Fe intermetallic compounds extracted by a thermal phenol dissolution method, those with a size of 1m in average diameter are 70% of Fe content, and those with a size of 0.1 to 1m in average diameter are 10 to 25% of Fe content, and further, Fe content in the sum total of those with a size of 0.1m is 80%.;COPYRIGHT: (C)2007,JPO&INPIT