Title:
MNAL ALLOY
Document Type and Number:
WIPO Patent Application WO/2018/173786
Kind Code:
A1
Abstract:
The problem addressed by the present invention is to provide a Mn based alloy exhibiting metamagnetism in a wide range of temperatures. This MnAl alloy has metamagnetism and has crystal particles containing a τ-MnAl phase and crystal particles containing a γ2-MnAl phase. Letting B be the surface area of the crystal particles containing the τ-MnAl phase and A be the surface area of the crystal particles containing the γ2-MnAl phase in a prescribed cross section, the value for B/A is preferably 0.2 – 21.0. If the surface area ratio of the crystal particles containing the τ-MnAl phase and the crystal particles containing the γ2-MnAl phase is controlled in this range, the MnAl alloy will be given metamagnetism such that metamagnetism can be obtained in a wide range of temperatures, specifically a temperature range of −100 – 200°C.
Inventors:
SATOH SUGURU (JP)
Application Number:
PCT/JP2018/009139
Publication Date:
September 27, 2018
Filing Date:
March 09, 2018
Export Citation:
Assignee:
TDK CORP (JP)
International Classes:
C22C22/00; C25C3/34; C25C5/04; H01F1/00; C22F1/00; C22F1/16
Foreign References:
| JP2017045824A | 2017-03-02 | |||
| US20100218858A1 | 2010-09-02 | |||
| CN104593625A | 2015-05-06 |
Other References:
PARK, J.H. ET AL.: "Saturation magnetization and crystalline anisotropy calculations for MnAl permanent magnet", JOURNAL OF APPLIED PHYSICS, vol. 107, no. 9, 21 April 2010 (2010-04-21), pages 1 - 3, XP012134235, Retrieved from the Internet
Attorney, Agent or Firm:
WASHIZU Mitsuhiro et al. (JP)
Download PDF: