Thermoelectric properties of half-Heusler high-entropy Ti2NiCoSn1-xSb1+ (x = 0.5, 1) alloys with VEC>18
| Autor: | K. Guruvidyathri, Sanyukta Ghosh, U.V. Varadaraju, Anirudha Karati, Lukas Bichler, Ramesh Chandra Mallik, V.S. Hariharan, M. Nagini, Rajashekhara Shabadi, Anil Prasad, B.S. Murty |
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| Rok vydání: | 2020 |
| Předmět: |
010302 applied physics
Materials science Consolidation (soil) Condensed matter physics Mechanical Engineering Alloy Metals and Alloys Spark plasma sintering 02 engineering and technology Atom probe Vacuum arc engineering.material 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences law.invention Mechanics of Materials law 0103 physical sciences Thermoelectric effect Ball (bearing) engineering General Materials Science 0210 nano-technology Valence electron |
| Zdroj: | Scripta Materialia. 186:375-380 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2020.04.036 |
| Popis: | A new set of half-Heusler high-entropy alloys Ti2NiCoSn1-xSb1+x (x = 0.5, 1), with a valence electron count higher than 18, were investigated for thermoelectric applications. Vacuum arc melting was employed for synthesis. Atom probe analysis confirmed single-phase at atomic level. The alloys were subsequently ball milled for 1 h followed by spark plasma sintering for consolidation. In 1 h BM cases, the alloy with x = 0.5 exhibited a low lattice thermal conductivity of 2.48 Wm−1K−1, and a ZT of 0.29 at 873 K. |
| Databáze: | OpenAIRE |
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