Magnetocaloric properties and magnetic cooling performance of low-cost Fe75 − xCrxAl25 alloys

Magnetocaloric properties and magnetic cooling performance of low-cost Fe75 − xCrxAl25 alloys

Low-cost, earth-abundant magnetocaloric materials (MCMs) are required for energy-efficient, green, and affordable magnetic cooling technology. We investigated the magnetic and magnetocaloric properties of rare-earth-free Fe75−xCrxAl25 (19≤x≤25) arc-melted alloys. The Curie temperature (Tc) of these...

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Bibliographic Details
Main Authors: Sharma, Vinay, Pattanaik, Subhasish, Parmar, Harshida, Ramanujan, Raju Vijayaraghavan
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2020
Subjects:
Engineering::Materials
Magnetocaloric Properties
Alloys
Online Access:https://hdl.handle.net/10356/140339
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Institution: Nanyang Technological University
Language: English
Description
Summary:Low-cost, earth-abundant magnetocaloric materials (MCMs) are required for energy-efficient, green, and affordable magnetic cooling technology. We investigated the magnetic and magnetocaloric properties of rare-earth-free Fe75−xCrxAl25 (19≤x≤25) arc-melted alloys. The Curie temperature (Tc) of these alloys could be tuned from 220 K up to room temperature by Cr additions. The relative cooling power/US$ was found to be superior to other promising MCMs. Fe50Cr25Al25 ball-milled powders, with an average particle size of ~25 nm, were used to prepare magnetic fluid. Maximum cooling (ΔT) of 5.4°C was observed for Fe50Cr25Al25-based fluids.

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