WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2
In this paper the impact of steady state pure D plasma on WCrY smart alloys at ion energies of 120 and 220 eV is reported. For this purpose a comparison with simultaneously exposed pure W samples is drawn. Different analysis techniques employed for pre- and post-plasma sample analysis hint at a sign...
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doaj-a166a379a4bf4fe88532f8ac9b69e50c2020-11-24T23:16:15ZengElsevierNuclear Materials and Energy2352-17912018-05-0115220225WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2J. Schmitz0A. Litnovsky1F. Klein2T. Wegener3X.Y. Tan4M. Rasinski5A. Mutzke6P. Hansen7A. Kreter8A. Pospieszczyk9S. Möller10J.W. Coenen11Ch. Linsmeier12U. Breuer13J. Gonzalez-Julian14M. Bram15Corresponding author.; Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, Germany; Department of Applied Physics, Ghent University, Ghent, 9000, BelgiumForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, Germany; School of Materials Science and Engineering, Hefei University of Technology, Hefei, 230009, ChinaForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyMax-Planck-Institute for Plasmaphysics, Wendelsteinstrasse 1, Greifswald, 17491, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Zentralinstitut für Engineering, Elektronik und Analytik, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung, Jülich, 52425, GermanyIn this paper the impact of steady state pure D plasma on WCrY smart alloys at ion energies of 120 and 220 eV is reported. For this purpose a comparison with simultaneously exposed pure W samples is drawn. Different analysis techniques employed for pre- and post-plasma sample analysis hint at a significant depletion of Cr and enrichment of W for lower ion energies. Preferential sputtering leads to enhanced volumetric loss at 220 eV. Analysis of redeposited material indicated local redeposition of Cr. Modelling the ion irradiation with SDTrimSP is used to further interpret experimental results. Depending on the sample temperature during plasma exposure and the magnitude of the ion flux, diffusion of Cr towards the surface is a determining factor for erosion of smart alloys for higher ion energies. Keywords: Smart alloys, Plasma-wall-interaction, Plasma ion irradiation, DEMO, W-based alloyshttp://www.sciencedirect.com/science/article/pii/S2352179117301023 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
J. Schmitz A. Litnovsky F. Klein T. Wegener X.Y. Tan M. Rasinski A. Mutzke P. Hansen A. Kreter A. Pospieszczyk S. Möller J.W. Coenen Ch. Linsmeier U. Breuer J. Gonzalez-Julian M. Bram |
spellingShingle |
J. Schmitz A. Litnovsky F. Klein T. Wegener X.Y. Tan M. Rasinski A. Mutzke P. Hansen A. Kreter A. Pospieszczyk S. Möller J.W. Coenen Ch. Linsmeier U. Breuer J. Gonzalez-Julian M. Bram WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2 Nuclear Materials and Energy |
author_facet |
J. Schmitz A. Litnovsky F. Klein T. Wegener X.Y. Tan M. Rasinski A. Mutzke P. Hansen A. Kreter A. Pospieszczyk S. Möller J.W. Coenen Ch. Linsmeier U. Breuer J. Gonzalez-Julian M. Bram |
author_sort |
J. Schmitz |
title |
WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2 |
title_short |
WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2 |
title_full |
WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2 |
title_fullStr |
WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2 |
title_full_unstemmed |
WCrY smart alloys as advanced plasma-facing materials – Exposure to steady-state pure deuterium plasmas in PSI-2 |
title_sort |
wcry smart alloys as advanced plasma-facing materials – exposure to steady-state pure deuterium plasmas in psi-2 |
publisher |
Elsevier |
series |
Nuclear Materials and Energy |
issn |
2352-1791 |
publishDate |
2018-05-01 |
description |
In this paper the impact of steady state pure D plasma on WCrY smart alloys at ion energies of 120 and 220 eV is reported. For this purpose a comparison with simultaneously exposed pure W samples is drawn. Different analysis techniques employed for pre- and post-plasma sample analysis hint at a significant depletion of Cr and enrichment of W for lower ion energies. Preferential sputtering leads to enhanced volumetric loss at 220 eV. Analysis of redeposited material indicated local redeposition of Cr. Modelling the ion irradiation with SDTrimSP is used to further interpret experimental results. Depending on the sample temperature during plasma exposure and the magnitude of the ion flux, diffusion of Cr towards the surface is a determining factor for erosion of smart alloys for higher ion energies. Keywords: Smart alloys, Plasma-wall-interaction, Plasma ion irradiation, DEMO, W-based alloys |
url |
http://www.sciencedirect.com/science/article/pii/S2352179117301023 |
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