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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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Nunes, Daniela
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (39/39 displayed)
- 2024Thermal-Carrier-Escape Mitigation in a Quantum-Dot-In-Perovskite Intermediate Band Solar Cell via Bandgap Engineeringcitations
- 2023Thermal-Carrier-Escape Mitigation in a Quantum-Dot-In-Perovskite Intermediate Band Solar Cell via Bandgap Engineeringcitations
- 2022Synthesis and characterization of porous TiO2 film decorated with bilayer hematite thin film for effective photocatalytic activitycitations
- 2022Enhanced Fe-TiO2 Solar Photocatalysts on Porous Platforms for Water Purificationcitations
- 2022A Comparison between Solution-Based Synthesis Methods of ZrO2 Nanomaterials for Energy Storage Applicationscitations
- 2022A Comparison between Solution-Based Synthesis Methods of ZrO2 Nanomaterials for Energy Storage Applicationscitations
- 2020Photonic-structured TCO front contacts yielding optical and electrically enhanced thin-film solar cellscitations
- 2020Enhanced electrical and photocatalytic properties of porous TiO2 thin films decorated with Fe2O3 nanoparticlescitations
- 2019Tailoring Upconversion and Morphology of Yb/Eu Doped Y2O3 Nanostructures by Acid Composition Mediationcitations
- 2019Mapping the space charge carrier dynamics in plasmon-based perovskite solar cellscitations
- 2018Ultra-fast plasmonic back reflectors production for light trapping in thin Si solar cellscitations
- 2018Green Nanotechnology from Waste Carbon-Polyaniline Compositecitations
- 2018Green Nanotechnology from Waste Carbon-Polyaniline Composite ; Generation of Wavelength-Independent Multiband Photoluminescence for Sensitive Ion Detectioncitations
- 2017Helium and deuterium irradiation effects in W-Ta composites produced by pulse plasma compactioncitations
- 2017Oxide-Based Solar Cellcitations
- 2016Photocatalytic behavior of TiO2 films synthesized by microwave irradiationcitations
- 2016Effect of Mg doping on Cu2O thin films and their behavior on the TiO2/Cu2O heterojunction solar cellscitations
- 2016Influence of the Substrate on the Morphology of Self-Assembled Silver Nanoparticles by Rapid Thermal Annealingcitations
- 2016Smart optically active VO2 nanostructured layers applied in roof-type ceramic tiles for energy efficiencycitations
- 2015TiO2/Cu2O all-oxide heterojunction solar cells produced by spray pyrolysiscitations
- 2014Cu2O polyhedral nanowires produced by microwave irradiationcitations
- 2013Structure properties of the YFe11 Mo intermetallic compoundcitations
- 2013Structure Properties of the YFe11Mo Intermetallic Compoundcitations
- 2013Multiscale copper-μdiamond nanostructured composites
- 2012Nickel-carbon nanocomposites: Synthesis, structural changes and strengthening mechanismscitations
- 2012Tungsten-nanodiamond composite powders produced by ball millingcitations
- 2011Microstructure evolution of mechanically alloyed ODS ferritic steels during hot extrusioncitations
- 2011Microstructural characterization of the ODS Eurofer 97 EU-batchcitations
- 2011Microstructures and magnetic domain configurations of NdFe11Ti and Nd2(Fe,Ti)17 aggregatescitations
- 2011Tungsten-microdiamond composites for plasma facing componentscitations
- 2011Production of Cu/diamond composites for first-wall heat sinkscitations
- 2011Copper-micrometer-sized diamond nanostructured compositescitations
- 2011Mechanical synthesis of copper-carbon nanocomposites: Structural changes, strengthening and thermal stabilizationcitations
- 2010Consolidation of Cu-nDiamond nanocompositescitations
- 2009Magnetic microstructure of YFe11Ti aggregatescitations
- 2009W-diamond/Cu-diamond nanostructured composites for fusion devices
- 2009Microstructure characterization of ODS-RAFM steels
- 2008Novel approach to plasma facing materials in nuclear fusion reactorscitations
- 2007Plasma-erosion of Cu-nanoDiamond and W-nanoDiamond composites
Places of action
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article
Helium and deuterium irradiation effects in W-Ta composites produced by pulse plasma compaction
Abstract
<p>Tungsten-tantalum composites have been envisaged for first-wall components of nuclear fusion reactors; however, changes in their microstructure are expected from severe irradiation with helium and hydrogenic plasma species. In this study, composites were produced from ball milled W powder mixed with 10 at.% Ta fibers through consolidation by pulse plasma compaction. Implantation was carried out at room temperature with He<sup>+</sup> (30 keV) or D<sup>+</sup> (15 keV) or sequentially with He<sup>+</sup> and D<sup>+</sup> using ion beams with fluences of 5 × 10<sup>21</sup> at/m<sup>2</sup>. Microstructural changes and deuterium retention in the implanted composites were investigated by scanning electron microscopy, coupled with focused ion beam and energy dispersive X-ray spectroscopy, transmission electron microscopy, X-ray diffraction, Rutherford backscattering spectrometry and nuclear reaction analysis. The composite materials consisted of Ta fibers dispersed in a nanostructured W matrix, with Ta<sub>2</sub>O<sub>5</sub> layers at the interfacial regions. The Ta and Ta<sub>2</sub>O<sub>5</sub> surfaces exhibited blisters after He<sup>+</sup> implantation and subsequent D<sup>+</sup> implantation worsened the blistering behavior of Ta<sub>2</sub>O<sub>5</sub>. Swelling was also pronounced in Ta<sub>2</sub>O<sub>5</sub> where large blisters exhibited an internal nanometer-sized fuzz structure. Transmission electron microscopy revealed an extensive presence of dislocations in the metallic phases after the sequential implantation, while a relatively low density of defects was detected in Ta<sub>2</sub>O<sub>5</sub>. This behavior may be partially justified by a shielding effect from the blisters and fuzz structure developed progressively during implantation. The tungsten peaks in the X-ray diffractograms were markedly shifted after He<sup>+</sup> implantation, and even more so after the sequential implantation, which is in agreement with the increased D retention inferred from nuclear reaction analysis.</p>