Invention Grant
- Patent Title: Aluminum alloy substrate for magnetic disks, method for producing same, and magnetic disk using this aluminum alloy substrate for magnetic disks
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Application No.: US16488826Application Date: 2018-02-09
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Publication No.: US11208710B2Publication Date: 2021-12-28
- Inventor: Kotaro Kitawaki , Takuya Murata , Makoto Yonemitsu , Kouichiro Takiguchi , Takashi Nakayama , Kimie Imakawa , Yasuo Fujii , Hideyuki Hatakeyama
- Applicant: UACJ CORPORATION , FURUKAWA ELECTRIC CO., LTD.
- Applicant Address: JP Tokyo; JP Tokyo
- Assignee: UACJ CORPORATION,FURUKAWA ELECTRIC CO., LTD.
- Current Assignee: UACJ CORPORATION,FURUKAWA ELECTRIC CO., LTD.
- Current Assignee Address: JP Tokyo; JP Tokyo
- Agency: Greer, Burns & Crain, Ltd.
- Priority: JPJP2017-035584 20170227
- International Application: PCT/JP2018/004609 WO 20180209
- International Announcement: WO2018/155237 WO 20180830
- Main IPC: C22F1/04
- IPC: C22F1/04 ; G11B5/73 ; C22C21/00 ; G11B5/858
Abstract:
Provided are: an aluminum alloy substrate for a magnetic disk, including an aluminum alloy including 0.4 to 3.0 mass % of Fe with the balance of Al and unavoidable impurities; a method for producing the aluminum alloy substrate for a magnetic disk; and a magnetic disk in which an electroless Ni—P plating treatment layer and a magnetic layer formed thereon are disposed on a surface of the aluminum alloy substrate for a magnetic disk.
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