Karati, A and Ghosh, S and Mallik, RC and Shabadi, R and Murty, BS and Varadaraju, UV (2022) Effect of Processing Routes on the Microstructure and Thermoelectric Properties of Half-Heusler TiFe0.5Ni0.5Sb1−xSnx (x = 0, 0.05, 0.1, 0.2) Alloys. In: Journal of Materials Engineering and Performance, 31 (1). pp. 305-317.
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Abstract
Sn-doped TiFe0.5Ni0.5Sb1−xSnx (x = 0, 0.05, 0.1, 0.2) were synthesized by vacuum arc melting (VAM). In addition to the half-Heusler phase, secondary phases of Fe–Sb-rich compound and Ti-rich compounds were obtained after VAM. The alloys were then subjected to ball milling for 1 h and 5 h. Ball milling for 1h led to microcrystalline grains, while that for 5 h led to nanocrystalline grains. Ball milling followed by spark plasma sintering (SPS) at 1173 K led to significant reduction in size of secondary phases in the microstructure. The undoped sample exhibited a ZT of 0.008 at 873 K for both 1h and 5h BM-SPS samples.
| Item Type: | Journal Article |
|---|---|
| Publication: | Journal of Materials Engineering and Performance |
| Publisher: | Springer |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | Antimony compounds; Intermetallics; Microstructure; Milling (machining); Nanocrystals; Powder metallurgy; Spark plasma sintering; Titanium alloys; Titanium compounds; Vacuum applications, Half-heusler; Intermetallic alloys; Microstructures properties; Processing Route; Secondary phase; Sn-doped; Spark-plasma-sintering; Synthesised; Thermoelectric properties; Vacuum arc melting, Ball milling |
| Department/Centre: | Division of Physical & Mathematical Sciences > Physics |
| Date Deposited: | 11 Jul 2022 08:29 |
| Last Modified: | 11 Jul 2022 08:29 |
| URI: | https://eprints.iisc.ac.in/id/eprint/74298 |
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