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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Buckman, Jim
Heriot-Watt University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2023Thermoelectric properties of the aliovalent half-Heusler alloy Zn 0.5 Ti 0.5 NiSb with intrinsic low thermal conductivitycitations
- 2023Thermoelectric properties of the aliovalent half-Heusler alloy Zn0.5Ti0.5NiSb with intrinsic low thermal conductivitycitations
- 2022Unravelling the role of natural imperfections on the mechanical behaviour of cemented granular systems: insights from naturally weakly cemented sands
- 2021Evolution of meniscus structures in hydrophobic granular systemscitations
- 2019Optimizing Thermoelectric Power Factor in p-Type Hydrogenated Nano-crystalline Silicon Thin Films by Varying Carrier Concentrationcitations
- 2019Phase stability and thermoelectric properties of TiCoSb-TiM2Sn (M = Ni, Fe) Heusler compositescitations
- 2018Grain-by-grain compositional variations and interstitial metals—a new route toward achieving high performance in half-Heusler thermoelectricscitations
- 2018Analysis of Sandstone Pore Space Fluid Saturation and Mineralogy Variation via Application of Monostatic K-Band Frequency Modulated Continuous Wave Radarcitations
- 2018Hydrogenated Nano-/Micro-Crystalline Silicon Thin-Films for Thermoelectricscitations
- 2018Grain-by-grain compositional variations and interstitial metals - a new route towards achieving high performance in Half-Heusler thermoelectricscitations
- 2018Substitution versus full-Heusler segregation in TiCoSbcitations
- 2018Grain-Scale Heterogeneity in Deep Water Massive Sands – Implications for Depositional Processes and Reservoir Quality
- 2018Grain-by-Grain Compositional Variations and Interstitial Metals -: A New Route toward Achieving High Performance in Half-Heusler Thermoelectricscitations
- 2016Monitoring micro-crack healing in an engineered cementitious composite using the environmental scanning electron microscopecitations
- 2016Thermoelectric properties and high-temperature stability of the Ti1-xVxCoSb1-xSnx half-Heusler alloyscitations
Places of action
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article
Thermoelectric properties and high-temperature stability of the Ti1-xVxCoSb1-xSnx half-Heusler alloys
Abstract
<p>Half-Heuslers (HHs) are attracting widespread interest for thermoelectric waste heat recovery. This manuscript extends the known TiCoSb based HH compositions and provides new insight into their high-temperature stability. X-ray powder diffraction revealed an upper solubility limit near x = 0.4 for the Ti<sub>1-x</sub>V<sub>x</sub>CoSb<sub>1-x</sub>Sn<sub>x</sub> series. Rietveld analysis of neutron powder diffraction data indicated that TiCoSb is stoichiometric, and confirmed that V and Sn are successfully co-substituted. Scanning electron microscopy revealed small grain sizes (2 and crystalline CoSb, suggesting that the degradation is driven by exposure to trace amounts of oxygen. The unintentional incorporation of Ta leads to n-type doping and maximum power factors S<sup>2</sup>/ρ = 0.55 mW m<sup>-1</sup> K<sup>-2</sup> at 550 K and S<sup>2</sup>/ρ = 0.8 mW m<sup>-1</sup> K<sup>-2</sup> at 900 K were observed for TiCoSb and the x = 0.3 sample, respectively.</p>