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Influence of Purity on the Formation of Cube Texture in Aluminum Foils for Electrolytic Capacitors

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/75338

Title: Influence of Purity on the Formation of Cube Texture in Aluminum Foils for Electrolytic Capacitors
Authors: Takata, Naoki Browse this author
Ikeda, Ken-ichi Browse this author →KAKEN DB
Yoshida, Fuyuki Browse this author
Nakashima, Hideharu Browse this author
Abe, Hiroshi Browse this author
Keywords: high purity aluminum foil
recrystallization
cube texture
scanning electron microscope-electron back-scattering diffraction pattern (SEM-EBSP) method
impurity
Issue Date: May-2004
Publisher: The Japan Institute of Light Metals
Journal Title: MATERIALS TRANSACTIONS
Volume: 45
Issue: 5
Start Page: 1687
End Page: 1692
Publisher DOI: 10.2320/matertrans.45.1687
Abstract: In the present study, the crystal orientation and residual strains in hot rolled sheets, cold rolled foils, partially annealed foils, and additionally rolled foils of aluminum of 99.9% (3NAl) and 99.99% (4NAl) purity used for the fabrication of electrolytic capacitors, were evaluated by the SEM/EBSP method. The additionally rolled foils were annealed at 573 K and the behavior of the growth of cube-oriented grains and the grain boundary character were analyzed. In the hot rolled sheets and the partially annealed foils, cube-oriented grains in 4NAl were larger in number and size than those of 3NAl. From the result, it was clarified that purity of the aluminum affected the growth of cubeoriented grains during the thermo-mechanical treatment. In the additionally rolled foils annealed at 573 K, the growth of the cube-oriented grains in 4NAl was faster than that in 3NAl. In both 3NAl and 4NAl, the residual strains and the grain boundary character were similar. Accordingly, it is concluded that impurity in 3NAl could have segregated at the grain boundaries around cube-oriented grains and supressed the growth of cube-oriented grains.
Type: article
URI: http://hdl.handle.net/2115/75338
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 池田 賢一

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