AI Article Synopsis
- Magnetocaloric materials are being explored for alternative cooling solutions, with a focus on shaping them into efficient heat exchangers.
- This study investigates the heat treatment of LaFeSiCo alloy made using Laser Beam Melting (LBM), which allows for a refined microstructure that requires shorter heat treatment times compared to traditional methods.
- The research examines the effects of heat treatment parameters and highlights promising results from induction technology, achieving a significant magnetic entropy change after just 15 minutes of annealing at high temperatures.
Article Abstract
In recent years, magnetocaloric materials have been extensively studied as materials for use in alternative cooling systems. Shaping the magnetocaloric material to thin-walled heat exchanger structures is an important step to achieve efficient magnetocaloric cooling systems. In the present work, experimental investigations were carried out on the heat treatment of LaFeSiCo alloy processed by Laser Beam Melting (LBM) technology. Due to the rapid solidification after melting, LBM results in a refined micro structure, which requires much shorter heat treatment to achieve a high percentage of magnetocaloric 1:13 phase compared to conventional cast material. The influence of the heat treatment parameters (temperature, time, and cooling rate) on the resulting microstructure has been extensively studied. In addition to the conventional heat treatment process, induction technology was investigated and the results were very promising in terms of achieving good magnetocaloric properties after short-time annealing. After only 15 min holding time at 1373 K, the magnetic entropy change (∆S) of -7.9 J/kg/K (0-2 T) was achieved.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7041373 | PMC |
| http://dx.doi.org/10.3390/ma13030773 | DOI Listing |
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