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  • The thermal conductivity of Al[sub]{73}Mn[sub]{27-x}Fe[sub]x Taylor phases = Toplotna prevodnost Taylorjevih faz Al[spodaj]{73}Mn[spodaj]{27-x}Fe[spodaj]x
    Stanić, Denis ...
    The thermal conductivity (k) of Al[sub]{73}Mn[sub]{27-x}Fe[sub]x (x = 0, 2, 4, 6) complex metallic alloys has been measured in the temperature interval from 2 K to 300 K. All the alloys are Tylor (T) ... phases, except Al[sub]{73}Mn[sub]{21}Fe[sub]6, which is a decagonal (d) quasicrystal. The behaviours of k are typical for complex metallic alloys, i.e., a relatively small magnitude, a change of slope at about 50 K and an increase of the conductivity above 100 K. At room temperature the magnitude of k for all the samples is between 2.7 W/mK and 3.3W/mK, which is comparable to that of thermally insulating amorphous SiO[sub SiO[sub]2 and Zr/YO[sub]2 ceramics. The reason for such a low thermal conductivity is because both, the electronic and lattice conductivity are low. The electronic contribution to the thermal conductivity is low because of the large electrical resistivity of the samples. The lattice thermal conductivity is greatly reduced because of the enhanced umklapp process of the phonon scattering (caused by the large lattice constant) and by the disorder in the structure.
    Vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 44, št. 1, jan.-feb. 2010, str. 3-7)
    Vrsta gradiva - članek, sestavni del
    Leto - 2010
    Jezik - angleški
    COBISS.SI-ID - 795050

    Povezava(-e):

    Digitalna knjižnica Slovenije - dLib.si

vir: Materiali in tehnologije = Materials and technology. - ISSN 1580-2949 (Letn. 44, št. 1, jan.-feb. 2010, str. 3-7)

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