Transport and thermoelectric properties of melt spinning synthesized M2FeNiSb2 (M = Ti, Hf) double half Heusler alloys

Mohamed Asran Hassan,A. El-Khouly,E.M. Elsehly, Eman N Almutib, Samah K. Elshamndy,I. Serhiienko,E.V. Argunov,A. Sedegov, D. Karpenkov, D. Pashkova, M. Gorshenkov,A. Novitskii,A. Voronin, V. Kostishyn,V. Khovaylo,A.M. Adam

Materials Research Bulletin（2023）

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摘要

•P-type Hf2FeNiSb2 and Ti2FeNiSb2, prepared by melt spinning method.•The samples sintered with spark plasma.•Thermoelectric properties were studied as functions of temperature from 300 K to 900 K.•Morphology and grain sizes were examined by SEM analysis.•The maximum seebeck coefficient was obtained for Ti2FeNiSb2 with a value of 293µV/K at 575 K.•The maximum zT value at 874 K was achieved for Hf2FeNiSb2 sample.

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关键词

Thermoelectric materials, Heusler alloys, Thermal conductivity, Spark plasma sintering, Melt spinning

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