Title:
ALUMINUM ALLOY BLANK FOR MAGNETIC DISC AND ALUMINUM ALLOY SUBSTRATE FOR MAGNETIC DISC
Document Type and Number:
WIPO Patent Application WO/2017/163943
Kind Code:
A1
Abstract:
For the aluminum alloy blank for a magnetic disc as in an embodiment of the present invention: Mg is 3.00 mass% or less and Si is 1.00 mass% or less; the blank contains at least one of Fe: 6.0 mass% or less, Mn: 10.0 mass% or less, and Ni: 10.0 mass% or less, the total amount thereof being 10.0 mass% or less; the balance consists of Al and unavoidable impurities; the area ratio of the surface occupied by intermetallic compounds is 5-40%; and the total area ratio of simple Si and Mg-Si intermetallic compound is 1% or less.
Inventors:
KOMURO HIDEYUKI
UMEDA HIDETOSHI
UMEDA HIDETOSHI
Application Number:
PCT/JP2017/009809
Publication Date:
September 28, 2017
Filing Date:
March 10, 2017
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
C22C21/00; C22C21/06; C22C21/10; C22C21/12; C22F1/04; C22F1/047; C22F1/053; C22F1/057; G11B5/73; C22F1/00
Foreign References:
| JPH09235640A | 1997-09-09 | |||
| JPH01225739A | 1989-09-08 | |||
| JP5815153B1 | 2015-11-17 | |||
| JP2006152404A | 2006-06-15 |
Attorney, Agent or Firm:
EIKOH PATENT FIRM, P.C. (JP)
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