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 - Université de Lille Accéder directement au contenu
Article Dans Une Revue Journal of Materials Engineering and Performance Année : 2021

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

Résumé

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.

Domaines

Matériaux

Dates et versions

hal-04414082 , version 1 (24-01-2024)

Identifiants

Citer

Anirudha Karati, Sanyukta Ghosh, Ramesh Chandra Mallik, Rajashekhara Shabadi, B. S. Murty, et al.. 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, 2021, Journal of Materials Engineering and Performance, 31 (1), pp.305-317. ⟨10.1007/s11665-021-06207-z⟩. ⟨hal-04414082⟩
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