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Characterization and Preparation of Nanostructured Al2Fe3Si3 Thermoelectric Materials
Zhiyang Zhao1, Teruyuki Ikeda1
1Graduate School of Science and Engineering, Ibaraki University, 4-12-1 Nakanarusawa, Hitachi 316-8511, Ibaraki, Japan.
Materials (Basel, Switzerland)
|November 27, 2025
Abstract:
A nanostructured Al2Fe3Si3 composite has been synthesized by high-energy ball milling followed by spark plasma sintering. Formations of oxides and FeSi or Al2Fe3Si4 phases in nanometer-size scales were observed in addition to the matrix Al2Fe3Si3 phase. Because of enhanced phonon scattering, the materials show low lattice thermal conductivities such as ~5 W/mK at the minimum.
