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  • Changes in the microstructure of Fe-doped Gd5Si2Ge2 = Spremembe v mikrostrukturi zlitine Gd5Si2Ge2, dopirane z Fe
    Škulj, Irena, 1972- ; McGuiness, Paul J. ; Podmiljšak, Benjamin, 1976-
    Gd[sub]{5}Si[sub]{2}Ge[sub]{2}-based alloys can exhibit a giant magnetocaloric effect (MCE); this gives them the potential for use in cooling and refrigeration technologies. Cast alloys of this type ... have been reported to exhibit a three-phase microstructure: the main phase has a composition close to Gd[sub]{5}(Si[sub]{1.95}Ge[sub]{2.05}); the secondary phases are Gd[sub]{1}(Si,Ge)[sub]{1} and Gd[sub]{5}(Si,Ge)[sub]{3}, with the latter reported to have linear features in the microstructure, characteristic of a Widmanstätten pattern. In this investigation we have looked at the effect on the microstructure of Gd[sub]{5}Si[sub]{2}Ge[sub]{2} resulting from a substitution of Si by Fe, according to the formula Gd[sub]{5}Si[sub]{2-x}Fe[sub]{x}Ge[sub]{2}, where x was varied between 0 and 1. Alloys with six different compositions were prepared using the arc-melting technique. All the samples and their microstructures were observed examined inoptical microscope (OM) and a field-emission-gun scanning electron microscope (FEG SEM). The microstructures were quantitatively assessed with energy-dispersive X-ray spectroscopy (EDS) and the samples were characterised using X-ray diffraction (XRD).
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 42, št. 3, maj-jun. 2008, str. 117-120)
    Vrsta gradiva - članek, sestavni del
    Leto - 2008
    Jezik - angleški
    COBISS.SI-ID - 678314

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 42, št. 3, maj-jun. 2008, str. 117-120)

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