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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 11851731 B1

PDFFull Text
Date of Patent:
Dec. 26, 2023

Filed:

Dec. 20, 2018

Highly tunable, inexpensive and easily fabricated magnetocaloric materials

Applicant:

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

Inventors:

Henrique Neves Bez, Santa Catarina, BR;

Anis Biswas, Ames, IA (US);

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

Yaroslav Mudryk, Ames, IA (US);

Nikolai A. Zarkevich, Ames, IA (US);

Viktor Balema, Ames, IA (US);

Vitalij K Pecharsky, Ames, IA (US);

Assignee:

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

Attorney:
Primary Examiner:

Sally A Merkling

Assistant Examiner:

Dean Mazzola

Int. Cl.
CPC ...
C22C 1/02 (2006.01); C22C 30/00 (2006.01); H01F 1/01 (2006.01); C21D 8/12 (2006.01); C22F 1/10 (2006.01); C22C 19/00 (2006.01); C22C 19/03 (2006.01); C22C 30/06 (2006.01); C22C 30/02 (2006.01); C22C 1/04 (2023.01);
U.S. Cl.
CPC ...
C22C 1/023 (2013.01); C21D 8/1211 (2013.01); C22C 1/02 (2013.01); C22C 1/0433 (2013.01); C22C 19/005 (2013.01); C22C 19/03 (2013.01); C22C 30/00 (2013.01); C22C 30/02 (2013.01); C22C 30/06 (2013.01); C22F 1/10 (2013.01); H01F 1/015 (2013.01); C22C 2202/02 (2013.01);
Abstract

A method is provided of making a magnetocaloric alloy composition comprising Ni, Co, Mn, and Ti, which preferably includes certain beneficial substitutional elements, by melting the composition and rapidly solidifying the melted composition at a cooling rate of at least 100 K/second (Kelvin/second) to improve a magnetocaloric property of the composition. The rapidly solidified composition can be heat treated to homogenize the composition and annealed to tune the magneto-structural transition for use in a regenerator.

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