US 12,168,819 B2
Modified La—Fe—Si magnetocaloric alloys
Arjun K. Pathak, Willamsville, NY (US); Yaroslav Mudryk, Ames, IA (US); Oleksandr Dolotko, Karlsruhe (DE); and Vitalij K. Pecharsky, Ames, IA (US)
Assigned to Iowa State University Research Foundation, Inc., Ames, IA (US)
Filed by Iowa State University Research Foundation, Inc., Ames, IA (US)
Filed on Feb. 16, 2022, as Appl. No. 17/803,110.
Application 17/803,110 is a continuation of application No. 16/501,027, filed on Feb. 11, 2019, granted, now 11,289,248.
Claims priority of provisional application 62/710,968, filed on Mar. 5, 2018.
Prior Publication US 2022/0238262 A1, Jul. 28, 2022
Int. Cl. H01F 1/01 (2006.01); B33Y 70/00 (2020.01); C22C 33/04 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/06 (2006.01); B22F 10/28 (2021.01)
CPC C22C 33/04 (2013.01) [B33Y 70/00 (2014.12); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/06 (2013.01); H01F 1/015 (2013.01); B22F 10/28 (2021.01); C22C 2202/02 (2013.01)] 9 Claims
 
1. A magnetocaloric alloy comprising a magnetocaloric intermetallic compound phase having a crystal structure which comprises La, Fe and Si and at least one of Al, Ga, and/or In are present in solid solution in an amount of 0.07 atomic % to 3.5 atomic % of the alloy which amount is selected to reduce alloy brittleness as compared to an identical alloy devoid of Al, Ga, and In to increase the number of temperature/magnetic field cycles without alloy cracking or decrepitating.