Iron-rhodium magnetocaloric alloy ribbons for high performance cooling-heating applications and process for manufacturing the same

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United States of America

PATENT NO 12136508
APP PUB NO 20220084728A1
SERIAL NO

17023608

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Abstract

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A polycrystalline magnetocaloric material based on thermally annealed Fe100-xRhx melt-spun ribbons with chemical composition x in the interval 48≤x≤52 at. % and the bcc CsCl-type crystal structure (B2) and method for manufacturing the same. The material has improved magnetocaloric properties associated to first-order magneto-elastic phase transition compared to bulk alloys of similar chemical composition manufactured by conventional melting techniques; exhibiting both low-magnetic field induced giant magnetocaloric effects and enhanced refrigeration capacity close to the room temperature range, due to the fast increase of a magnetic entropy change at low fields that is followed by a broad table-like magnetic entropy change as function in the temperature curve. The material is useful as a working substance for the applications involving heating or cooling upon the removal or application of an external magnetic field, such as magnetocaloric refrigeration, heat exchangers, controllable delivery and release of bio-active substances imbedded in a thermo-sensitive polymer and local heating which destroy malignant neoplasms.

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Patent Owner(s)

Patent OwnerAddress
INSTITUTO POTOSINO DE INVESTIGACION CIENTIFICA Y TECNOLOGICA A CCAMINO A LA PRESA SAN JOSE 2055 COL LOMAS 4A SECCION SAN LUIS POTOSI SAN LUIS POTOSI C P 78216
UNIVERSIDAD AUTONOMA DE CIUDAD JUAREZAV PLUTARCO ELÍAS CALLES #1210 FOVISSSTE CHAMIZAL CHIH CIUDAD SUAREZ 32310

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Arreguin, Hernandez Maria de Lourdes Guanajuato, MX 2 0
Lopez, Cruz Mauricio San Luis Potosi, MX 2 0
Sanchez, Llamazares Jose Luis San Luis Potosi, MX 3 0
Sanchez, Valdes Cesar Fidel Chihuahua, MX 3 0

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