| People | Locations | Statistics |
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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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Jalkanen, Pasi
University of Helsinki
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Conversion of ALD CuO Thin Films into Transparent Conductive p-Type CuI Thin Filmscitations
- 2023Hydrogen isotope exchange experiments in high entropy alloy WMoTaNbVcitations
- 2022Irradiation Damage Independent Deuterium Retention in WMoTaNbVcitations
- 2022Atomic layer deposition of PbCl2, PbBr2 and mixed lead halide (Cl, Br, I) PbXnY2-n thin filmscitations
- 2022Atomic Layer Deposition of CsI and CsPbI3citations
- 2020Preparation and In vivo Evaluation of Red Blood Cell Membrane Coated Porous Silicon Nanoparticles Implanted with 155Tbcitations
- 2020Atomic Layer Deposition of PbS Thin Films at Low Temperaturescitations
- 2019Crystalline tungsten sulfide thin films by atomic layer deposition and mild annealingcitations
- 2019Atomic Layer Deposition of Emerging 2D Semiconductors, HfS2 and ZrS2, for Optoelectronicscitations
- 2016Electric and Magnetic Properties of ALD-Grown BiFeO3 Filmscitations
- 2016Atomic Layer Deposition of Iridium Thin Films Using Sequential Oxygen and Hydrogen Pulsescitations
- 2016Nucleation and conformality of iridium and iridium oxide thin films grown by atomic layer depositioncitations
- 2007Critical temperature modification of low dimensional superconductors by spin dopingcitations
Places of action
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article
Hydrogen isotope exchange experiments in high entropy alloy WMoTaNbV
Abstract
Plasma–facing components in future fusion reactors must endure high temperatures as well as high fluxes and fluences of high energy particles. Currently tungsten has been chosen as the primary plasma-facing material due to its good thermal conductivity, low erosion rate and low fuel retention. Materials with even better properties are still being investigated to be used in reactor regions with demanding plasma conditions. High entropy alloys (HEA) are a new class of metallic alloys and their exploitation in fusion applications has not been widely studied. In this work, the hydrogen isotope exchange effect in an equiatomic HEA containing W, Mo, Ta, Nb, and V was studied. Deuterium was implanted into HEA samples with 30 keV/D energy and the HEA and reference samples were annealed in H2 atmosphere and in vacuum at various temperatures up to 400 °C, respectively. The near-surface D concentration profiles were measured with ERDA and the isotope exchange was observed to remove over 90 % of the trapped deuterium from the implantation region at temperatures above 200 °C. TDS was used to measure retention deeper in the bulk in which the reduction of trapped deuterium was significantly lower. High total retention of H was found in the bulk after H2 atmosphere annealing which indicates permeation and deep trapping of H in the material. ; Plasma-facing components in future fusion reactors must endure high temperatures as well as high fluxes and fluences of high energy particles. Currently tungsten has been chosen as the primary plasma-facing material due to its good thermal conductivity, low erosion rate and low fuel retention. Materials with even better properties are still being investigated to be used in reactor regions with demanding plasma conditions. High entropy alloys (HEA) are a new class of metallic alloys and their exploitation in fusion applications has not been widely studied. In this work, the hydrogen isotope exchange effect in an equiatomic HEA containing W, Mo, Ta, Nb, and V was studied. Deuterium was ...