Thermal diffusivity of La98.8Fe1.2 alloy in the temperature range of 293-1623 K
I.V. Savchenko, D.A. Samoshkin, S.V. Stankus
Kutateladze Institute of Thermophysics SB RAS, Novosibirsk, Russia
Keywords: теплопроводность, температуропроводность, лантан, конденсированное состояние, лазерно-импульсный метод, высокие температуры, фазовые переходы, thermal conductivity, thermal diffusivity, lanthanum, condensed state, laser flash method, high temperatures, phase transformations
Abstract
The laser-pulse method was used to measure the thermal diffusivity of La98.8Fe1.2 alloy in the temperature range of 293-1623 K of the solid and liquid states, including the regions of phase transformations. The measurement uncertainties of the heat transfer coefficients were ± (3-6) %. Approximating equations and tables of reference data on thermal conductivity and thermal diffusivity of La98.8Fe1.2 alloy have been obtained for scientific and practical use. A comparison of measurement results with known literature data on thermal diffusivity of pure lanthanum has been carried out.
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