Tungsten nitride as tritium permeation barrier
The development and application of robust tritium permeation barrier coatings is crucial for a safe and economic fusion reactor operation. Three different tungsten and tungsten nitride layers on Eurofer97 substrates were investigated by deuterium permeation measurements and compared. The microstruct...
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doaj-7d8b35f44cfe4b19aeb5ee91a1d1c7dd2020-11-25T03:24:34ZengElsevierNuclear Materials and Energy2352-17912020-08-0124100752Tungsten nitride as tritium permeation barrierA. Houben0M. Rasiński1L. Gao2Ch. Linsmeier3Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung – Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Jülich, Germany; Corresponding author.Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung – Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Jülich, GermanyMax-Planck-Institut für Plasmaphysik, Boltzmannstr. 2, 85748 Garching, GermanyForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung – Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Jülich, GermanyThe development and application of robust tritium permeation barrier coatings is crucial for a safe and economic fusion reactor operation. Three different tungsten and tungsten nitride layers on Eurofer97 substrates were investigated by deuterium permeation measurements and compared. The microstructure and crystal structure was characterized before and after permeation measurements. The layer permeability is independent of the layer thickness and substrate of the sample. For a reliable comparison of different tritium permeation barrier coatings, the layer permeability of each layer was calculated. With this layer permeability, the permeation flux through potential fusion device components can be estimated. As examples, the permeation flux through a 0.5 cm thick steel component can be reduced by two orders of magnitude by a 2 μm thick WN layer and nearly four orders of magnitude by a 2 μm non-cracked tungsten layer.http://www.sciencedirect.com/science/article/pii/S2352179120300284Deuterium gas driven permeationTritium permeation barriersRAFM steel/Eurofer97Tungsten nitrideLayer permeability calculation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A. Houben M. Rasiński L. Gao Ch. Linsmeier |
spellingShingle |
A. Houben M. Rasiński L. Gao Ch. Linsmeier Tungsten nitride as tritium permeation barrier Nuclear Materials and Energy Deuterium gas driven permeation Tritium permeation barriers RAFM steel/Eurofer97 Tungsten nitride Layer permeability calculation |
author_facet |
A. Houben M. Rasiński L. Gao Ch. Linsmeier |
author_sort |
A. Houben |
title |
Tungsten nitride as tritium permeation barrier |
title_short |
Tungsten nitride as tritium permeation barrier |
title_full |
Tungsten nitride as tritium permeation barrier |
title_fullStr |
Tungsten nitride as tritium permeation barrier |
title_full_unstemmed |
Tungsten nitride as tritium permeation barrier |
title_sort |
tungsten nitride as tritium permeation barrier |
publisher |
Elsevier |
series |
Nuclear Materials and Energy |
issn |
2352-1791 |
publishDate |
2020-08-01 |
description |
The development and application of robust tritium permeation barrier coatings is crucial for a safe and economic fusion reactor operation. Three different tungsten and tungsten nitride layers on Eurofer97 substrates were investigated by deuterium permeation measurements and compared. The microstructure and crystal structure was characterized before and after permeation measurements. The layer permeability is independent of the layer thickness and substrate of the sample. For a reliable comparison of different tritium permeation barrier coatings, the layer permeability of each layer was calculated. With this layer permeability, the permeation flux through potential fusion device components can be estimated. As examples, the permeation flux through a 0.5 cm thick steel component can be reduced by two orders of magnitude by a 2 μm thick WN layer and nearly four orders of magnitude by a 2 μm non-cracked tungsten layer. |
topic |
Deuterium gas driven permeation Tritium permeation barriers RAFM steel/Eurofer97 Tungsten nitride Layer permeability calculation |
url |
http://www.sciencedirect.com/science/article/pii/S2352179120300284 |
work_keys_str_mv |
AT ahouben tungstennitrideastritiumpermeationbarrier AT mrasinski tungstennitrideastritiumpermeationbarrier AT lgao tungstennitrideastritiumpermeationbarrier AT chlinsmeier tungstennitrideastritiumpermeationbarrier |
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