Title:
ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISKS, METHOD FOR PRODUCING SAME, AND MAGNETIC DISK WHICH USES SAID ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISKS
Document Type and Number:
WIPO Patent Application WO/2019/102669
Kind Code:
A1
Abstract:
An aluminum alloy substrate for magnetic disks, which is characterized in that the product of the loss factor and the plate thickness of the substrate is 0.7 × 10-3 or more; a method for producing this aluminum alloy substrate for magnetic disks; and a magnetic disk which is characterized in that an electroless Ni-P plating layer and a magnetic material layer disposed thereon are provided on the surface of this aluminum alloy substrate for magnetic disks.
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Inventors:
KITAWAKI KOTARO (JP)
YONEMITSU MAKOTO (JP)
NAKAYAMA TAKASHI (JP)
NAKAMURA TOSHIHIRO (JP)
SAKAMOTO RYO (JP)
HATAKEYAMA HIDEYUKI (JP)
YONEMITSU MAKOTO (JP)
NAKAYAMA TAKASHI (JP)
NAKAMURA TOSHIHIRO (JP)
SAKAMOTO RYO (JP)
HATAKEYAMA HIDEYUKI (JP)
Application Number:
PCT/JP2018/031019
Publication Date:
May 31, 2019
Filing Date:
August 22, 2018
Export Citation:
Assignee:
UACJ CORP (JP)
FURUKAWA ELECTRIC CO LTD (JP)
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
G11B5/73; C22C21/00; C22F1/00; C22F1/04; G11B5/84
Foreign References:
| JP2017186597A | 2017-10-12 | |||
| JP2017031507A | 2017-02-09 |
Attorney, Agent or Firm:
KIMURA MITSURU (JP)
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