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

Karati, Anirudha and Ghosh, Sanyukta and Mallik, Ramesh Chandra and Shabadi, Rajashekhara and Murty, B S and et al, . (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. Journal of Materials Engineering and Performance, 31 (1). pp. 305-317. ISSN 1059-9495

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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. © 2021, ASM International.

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IITH Creators:
IITH CreatorsORCiD
Murty, B Shttps://orcid.org/0000-0002-4399-8531
Item Type: Article
Uncontrolled Keywords: intermetallic alloys; powder metallurgy; semiconductors; sintering
Subjects: Others > Metallurgy Metallurgical Engineering
Chemistry
Materials Engineering > Materials engineering
Divisions: Department of Chemistry
Department of Material Science Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 29 Jul 2022 05:16
Last Modified: 29 Jul 2022 05:16
URI: http://raiithold.iith.ac.in/id/eprint/10008
Publisher URL: http://doi.org/10.1007/s11665-021-06207-z
OA policy: https://v2.sherpa.ac.uk/id/publication/14279
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