20.500.12556/RUL-126300 Epoxy-bonded La-Fe-Co-Si magnetocaloric plates We report the processing, analysis and testing of magnetocaloric composite materials consisting of La-Fe-Co-Si particles of various size fractions and a polymer matrix. All of the composites have working temperatures close to room temperature. The composites were pressed into thin plates, a geometry favorable for testing the composites in an active magnetic regenerator (AMR). In order to investigate the influence of particle size and binder type (epoxy), eight different epoxy-bonded La-Fe-Co-Si plates were made and analyzed. We found that the higher filling factor that can be achieved by using a mixture of several particle size fractions has beneficial influence on the thermal conductivity. Tests in the AMR revealed that a maximum temperature span of approximately T=10 K under magnetic field change of 0H=1.15 T can be obtained at no cooling load conditions. The stability of the measured T values and the mechanical integrity of sample after cyclic application of a magnetic field have been monitored for 90,000 cycles and showed no significant changes. We therefore conclude that epoxy-bonded La-Fe-Co-Si magnetocaloric composites have good magnetocaloric properties at low material-processing costs and hence represent a competitive way to produce magnetocaloric materials to be used in AMR. magnetocaloric effect magnetic refrigeration La-Fe-Co-Si active magnetic regenerator epoxy magnetokalorični efekt procesiranje materialov magnetokalorični material magnetno hlajenje true false true Angleški jezik Slovenski jezik Članek v reviji 2021-04-15 22:17:24 2021-04-15 22:17:27 2022-09-05 03:54:39 0000-00-00 00:00:00 2015 0 0 Str. 65-73 Vol. 375 Feb. 2015 0000-00-00 PostprintKoncna Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 2016-09-02 621.565.8:697.97:620.1(045) 0304-8853 10.1016/j.jmmm.2014.08.074 13703963 25758720 RAZ_Pulko_Barbara_2015.pdf RAZ_Pulko_Barbara_2015.pdf 1 A47135056DB687DB63207A822B175675 baec9e435fdc8ca852a603ee0d3d008ded308243e9d4a629ca345998d0d5730f e1b5744b-a1bb-11eb-a523-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142204 https://www.sciencedirect.com/science/article/pii/S0304885314007732?via%3Dihub 1 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=142205 Fakulteta za strojništvo 0 0 0