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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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Han, Li
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (20/20 displayed)
- 2020Interface fracture energy of contact layers in a solid oxide cell stackcitations
- 2018High-temperature thermoelectric properties of Na- and W-Doped Ca3Co4O9 system citations
- 2017Mid-IR optical properties of silicon doped InPcitations
- 2017Thermal operating window for PEDOT:PSS films and its related thermoelectric propertiescitations
- 2017Thermal operating window for PEDOT:PSS films and its related thermoelectric propertiescitations
- 2016On the Challenges of Reducing Contact Resistances in Thermoelectric Generators Based on Half-Heusler Alloyscitations
- 2016On the Challenges of Reducing Contact Resistances in Thermoelectric Generators Based on Half-Heusler Alloyscitations
- 2016On the Challenges of Reducing Contact Resistances in Thermoelectric Generators Based on Half-Heusler Alloyscitations
- 2016Effects of spark plasma sintering conditions on the anisotropic thermoelectric properties of bismuth antimony telluridecitations
- 2016Scandium-doped zinc cadmium oxide as a new stable n-type oxide thermoelectric materialcitations
- 2016Promising bulk nanostructured Cu2Se thermoelectrics via high throughput and rapid chemical synthesiscitations
- 2014Characterization of the interface between an Fe–Cr alloy and the p-type thermoelectric oxide Ca3Co4O9citations
- 2014The effect of setting velocity on the static and fatigue strengths of self-piercing riveted joints for automotive applications
- 2014Fabrication, spark plasma consolidation, and thermoelectric evaluation of nanostructured CoSb3citations
- 2014Characterization of the interface between an Fe–Cr alloy and the p -type thermoelectric oxide Ca 3 Co 4 O 9citations
- 2014Fabrication, spark plasma consolidation, and thermoelectric evaluation of nanostructured CoSb 3citations
- 2013The Influence of α- and γ-Al 2 O 3 Phases on the Thermoelectric Properties of Al-doped ZnOcitations
- 2013The Influence of α- and γ-Al2O3 Phases on the Thermoelectric Properties of Al-doped ZnOcitations
- 2008Formation and microstructure of (Ti, V)C-reinforeed iron-matrix composites using self-propagating high-temperature synthesis
- 2006Fretting behaviour of self-piercing riveted aluminium alloy joints under different interfacial conditions
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article
Fabrication, spark plasma consolidation, and thermoelectric evaluation of nanostructured CoSb3
Abstract
Nanostructured powders of thermoelectric (TE) CoSb3 compounds were synthesized using a chemical alloying method. This method involved co-precipitation of oxalate precursors in aqueous solution with controlled pH, followed by thermochemical treatments including calcination and reduction to produce stoichiometric nanostructured CoSb3. Moreover, CoSb 3 nanoparticles were consolidated by spark plasma sintering (SPS) with a very brief processing time. Very high compaction densities (>95%) were achieved and the grain growth was almost negligible during consolidation. An iterative procedure was developed to maintain pre-consolidation particle size and to compensate Sb evaporation during reduction. Significant changes in particle size and morphology were observed, and the post-reduction cooling was found to be an important stage in the process. The spark plasma sintering (SPS) parameters were optimized to minimize the grain growth while achieving sufficient densification. Grain sizes in the range of 500 nm to 1 μm, with compaction density of 95-98% were obtained. Preliminary measurements of thermal diffusivity and conductivity showed the dependence on grain size as well as on porosity. TE transport properties were measured in the temperature range of 300-650 K. Sample showed p-type behavior with a positive Seebeck coefficient, which increases with increasing temperature. Electrical conductivity measurements indicate metallic behavior and it decreases with increasing temperature. Thermal conductivity also decreases with increasing temperature and major contribution is due to the lattice component. A TE figure of merit of 0.15 was achieved for high purity CoSb3 nanostructured TE material at 650 K and these results are comparable with the values reported for the best unfilled/undoped CoSb3 in the literature. © 2014 Elsevier B.V. All rights reserved.