Title:
ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISK, METHOD FOR PRODUCING SAME, AND MAGNETIC DISK OBTAINED USING SAID ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISK
Document Type and Number:
WIPO Patent Application WO/2020/059742
Kind Code:
A1
Abstract:
This aluminum alloy substrate for a magnetic disk is characterized: by comprising an aluminum alloy which contains one or more elements selected from the group consisting of 0.05-3.00 mass% (hereinafter abbreviated to "%") of Fe, 0.05-3.00% of Mn, 0.05-18.00% of Si, 0.05-8.00% of Ni, 0.05-3.00% of Cr and 0.05-3.00% of Zr, with the remainder comprising Al and unavoidable impurities; and in that the Young's modulus is 67 GPa or more in directions of 0°, 45° and 90° from the direction in which the substrate is rolled. Also provided are a method for producing the aluminum alloy substrate, and a magnetic disk obtained using the aluminum alloy substrate for a magnetic disk.
Inventors:
KITAWAKI KOTARO (JP)
YONEMITSU MAKOTO (JP)
NAKAYAMA TAKASHI (JP)
IMAKAWA KIMIE (JP)
HATAKEYAMA HIDEYUKI (JP)
YONEMITSU MAKOTO (JP)
NAKAYAMA TAKASHI (JP)
IMAKAWA KIMIE (JP)
HATAKEYAMA HIDEYUKI (JP)
Application Number:
PCT/JP2019/036525
Publication Date:
March 26, 2020
Filing Date:
September 18, 2019
Export Citation:
Assignee:
UACJ CORP (JP)
FURUKAWA ELECTRIC CO LTD (JP)
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
C22C21/02; B21B1/22; B21B3/00; C22C21/00; C22F1/043; G11B5/73; G11B5/84; C22F1/00
Foreign References:
| US20030180562A1 | 2003-09-25 | |||
| JP2017179590A | 2017-10-05 | |||
| JP2018125056A | 2018-08-09 |
Attorney, Agent or Firm:
KIMURA MITSURU (JP)
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