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Mostrando ítems 1-10 de 16
Artículo
Direct magnetocaloric measurements of Fe-B-Cr-X (X = La, Ce) amorphous ribbons
(American Institute of Physics, 2011)
A procedure has been developed to directly measure the adiabatic temperature change of amorphous melt-spun Fe-based ribbons displaying attractive room temperature magnetocaloric properties. Polycrystalline Gd ribbons are ...
Artículo
Additive manufacturing of magnetocaloric (La,Ce)(Fe,Mn,Si)13–H particles via polymer-based composite filaments
(Elsevier, 2022-11)
Additive manufacturing could be an excellent way of shaping magnetocaloric heat exchangers in magnetic refrigerators. However, the metal additive manufacturing techniques present the serious limitation that the melting of ...
Artículo
Enhancement of the Magnetic Refrigerant Capacity in Partially Amorphous Fe 70Zr 30 Powders Obtained by Mechanical Alloying
(Elsevier, 2012)
After mechanical alloying Fe 70Zr 30 composition from pure starting powders, an amorphous phase with Curie temperature T C = 244 K and an intermetallic compound (that should be non-stoichiometric Zr-rich fcc Fe 2Zr phase) ...
Artículo
Excellent Cryogenic Magnetocaloric Properties in Heavy Rare-earth Based HRENiGa2 (HRE = Dy, Ho, or Er) Compounds
(Science Press, 2023)
RENiX2 compounds, where RE = rare-earth element and X = p-block element, have been highly regarded for cryogenic magnetocaloric applications. Depending on the elements, they can crystallize in CeNiSi2-type, NdNiGa2-type, ...
Artículo
Influence of Hot Compaction on Microstructure and Magnetic Properties of Mechanically Alloyed Fe(Co)-based Amorphous Compositions
(Elsevier, 2015)
Amorphous Fe75Nb10B15 and (Fe70Co30)75Nb10B15 alloys were prepared by mechanical alloying from the elemental constituents and hot compacted at different temperatures within the supercooled liquid region. After compaction, ...
Artículo
Tunable Magnetocaloric Effect Towards Cryogenic Range by Varying Mn:Ni Ratio in All-d-metal Ni(Co)-Mn-Ti Heusler Alloys
(Elsevier, 2023)
Cryogenic magnetic refrigeration is a highly efficient and environmentally friendly technique for gas liquefaction. However, refrigerant materials undergoing large magnetocaloric response at the interesting cryogenic range ...
Artículo
Magnetic Multilayers as a Way to Increase the Magnetic Field Responsiveness of Magnetocaloric Materials
(American Scientific Publishers, 2012)
The magnetocaloric response of Ni–Cu based multilayers has been studied with the aim of optimizing their magnetic field dependence. In contrast to the behavior of single phase materials, whose peak magnetic entropy change ...
Artículo
All-d-metal Ni(Co)-Mn(X)-Ti (X = Fe or Cr) Heusler Alloys: Enhanced Magnetocaloric Effect for Moderate Magnetic Fields
(Elsevier, 2023)
All-d-metal Ni(Co)-Mn-Ti Heusler alloys show high magnetocaloric/barocaloric effects ascribed to the occurrence of a martensitic transformation together with excellent mechanical properties. However, high magnetic fields ...
Artículo
Magnetocaloric effect of Co62Nb6Zr2B30 amorphous alloys obtained by mechanical alloying or rapid quenching
(2014)
Amorphous samples of nominal composition Co62Nb6Zr2B30 have been prepared using mechanical alloying (MA) and rapid quenching (RQ) techniques. Differences appear in Curie temperature and the phases developed after ...
Artículo
Study of the Induced Anisotropy in Field Annealed Hitperm Alloys by Mössbauer Spectroscopy and Kerr Microscopy
(Springer Nature, 2016)
Samples of Fe39Co39Nb6B15Cu1 alloy were nanocrystallized under zero field annealing (ZF) and transverse field annealing (TF) conditions. A reduction in coercivity for TF samples with respect to ZF sample (16 and 45 A/m, ...