The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 05, 2022
Filed:
Jun. 26, 2019
Applicant:
Tdk Corporation, Tokyo, JP;
Inventor:
Suguru Satoh, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C22F 1/18 (2006.01); C25D 3/66 (2006.01); C22C 22/00 (2006.01);
U.S. Cl.
CPC ...
C22F 1/18 (2013.01); C22C 22/00 (2013.01); C25D 3/66 (2013.01);
Abstract
A MnAl alloy according to the present invention exhibits metamagnetism and has crystal grains containing a τ-MnAl phase and crystal grains containing a γ2-MnAl phase and a β-MnAl phase. When the ratio of the τ-MnAl phase is A, 75%≤A≤99% is preferably satisfied, and when the ratios of the γ2-MnAl phase and β-MnAl phase are B and C, respectively, B<C is preferably satisfied. Thus, it is possible to obtain metamagnetism over a wide temperature range, particularly, over a temperature range of −100° C. to 200° C. and to enhance saturation magnetization.