Title:
SUBSTRATE FOR MAGNETIC DISK
Document Type and Number:
WIPO Patent Application WO/2017/188320
Kind Code:
A1
Abstract:
The present invention provides an aluminum alloy substrate for a magnetic disk in which disk fluttering is less likely to occur. This aluminum alloy substrate for a magnetic disk is characterized in that the sum of the circumferential length of second phase particles having a maximum diameter of 4-30 µm in a metal structure is not less than 10 mm/mm2.
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Inventors:
NAKAMURA TOSHIHIRO (JP)
NAKAYAMA TAKASHI (JP)
IMAKAWA KIMIE (JP)
KUMAGAI WATARU (JP)
TODA SADAYUKI (JP)
KITAWAKI KOTARO (JP)
MURATA TAKUYA (JP)
MATSUI YU (JP)
YONEMITSU MAKOTO (JP)
HATAKEYAMA HIDEYUKI (JP)
NAKAYAMA TAKASHI (JP)
IMAKAWA KIMIE (JP)
KUMAGAI WATARU (JP)
TODA SADAYUKI (JP)
KITAWAKI KOTARO (JP)
MURATA TAKUYA (JP)
MATSUI YU (JP)
YONEMITSU MAKOTO (JP)
HATAKEYAMA HIDEYUKI (JP)
Application Number:
PCT/JP2017/016563
Publication Date:
November 02, 2017
Filing Date:
April 26, 2017
Export Citation:
Assignee:
UACJ CORP (JP)
FURUKAWA ELECTRIC CO LTD (JP)
FURUKAWA ELECTRIC CO LTD (JP)
International Classes:
C22C21/00; G11B5/73; C22F1/00; C22F1/04
Foreign References:
| JPH10102177A | 1998-04-21 | |||
| JPH10310836A | 1998-11-24 | |||
| JP2014196530A | 2014-10-16 | |||
| JPS57104654A | 1982-06-29 | |||
| JPH02282452A | 1990-11-20 |
Attorney, Agent or Firm:
IIDA, Toshizo et al. (JP)
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