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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.:

US 11289248 B1

PDFFull Text
Date of Patent:
Mar. 29, 2022

Filed:

Feb. 11, 2019

Modified la—fe—si magnetocaloric alloys

Applicant:

Iowa State University Research Foundation, Inc., Ames, IA (US);

Inventors:

Arjun K. Pathak, Ames, IA (US);

Yaroslav Mudryk, Ames, IA (US);

Oleksandr Dolotko, Ames, IA (US);

Vitalij K. Pecharsky, Ames, IA (US);

Assignee:

Iowa State University Research Foundation, Inc., Ames, IA (US);

Attorney:
Primary Examiner:

Nicholas A Wang

Assistant Examiner:

Jiangtian Xu

Int. Cl.
CPC ...
H01F 1/01 (2006.01); C22C 38/06 (2006.01); C22C 38/02 (2006.01); C22C 33/04 (2006.01); B33Y 70/00 (2020.01); C22C 38/00 (2006.01);
U.S. Cl.
CPC ...
H01F 1/015 (2013.01); B33Y 70/00 (2014.12); C22C 33/04 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); C22C 2202/02 (2013.01);
Abstract

A magnetocaloric material comprising a La—Fe—Si based alloy composition that is compositionally modified to include a small but effective amount of at least one of Al, Ga, and In to improve mechanical stability of the alloy (substantially reduce alloy brittleness), improve thermal conductivity, and preserve comparable or provide improved magnetocaloric effects. The alloy composition may be further modified by inclusion of at least one of Co, Mn, Cr, and V as well as interstitial hydrogen.

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