Characterization and Preparation of Nanostructured Al2Fe3Si3 Thermoelectric Materials
A nanostructured Al<sub>2</sub>Fe<sub>3</sub>Si<sub>3</sub> composite has been synthesized by high-energy ball milling followed by spark plasma sintering. Formations of oxides and FeSi or Al<sub>2</sub>Fe<sub>3</sub>Si<sub>4</sub> phases in nanometer-size scales were observed in addition to the matrix Al<sub>2</sub>Fe<sub>3</sub>Si<sub>3</sub> phase. Because of enhanced phonon scattering, the materials show low lattice thermal conductivities such as ~5 W/mK at the minimum.
Authors
- Takahide Ikeda (ORCID: https://orcid.org/0000-0001-7076-6958)
- Zhiyang Zhao (ORCID: https://orcid.org/0000-0001-8634-0716)
Institutions
- Ibaraki University (JP)
- Hitachi (Japan) (JP)
Publication Details
- Journal
- Materials
- Published
- 2025-11-15
- DOI
- https://doi.org/10.3390/ma18225193
- Primary Topic
- Advanced Thermoelectric Materials and Devices
- Type
- article
- Field-Weighted Citation Impact
- 0.00