Publication: Deuterium retention in the elements of plasma facing components for the DEMO first wall
Дата
2022
Авторы
Bobyr, N.
Kulikova, E.
Gasparyan, Y.
Bachurina, D.
Efimov, V.
Gurova, J.
Podolyako, F.
Sergeev, N. S.
Sorokin, I. A.
Suchkov, A.
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Аннотация
© 2022 Elsevier B.V.The fully reduced activation brazing alloy TiZr4Be and a tantalum intermediate layer are considered to be used for joining tungsten (W) to reduced-activation ferritic-martensitic steel (RAFM) for future DEMO reactor application. Deuterium retention in the W-Rusfer joints and separate elements was investigated with the focus on the intermediate brazing layer. The samples were exposed in deuterium gas (p = 1–104 Pa, T = 300–600°C) and plasma discharge (T = 600°C). An acceptable deuterium concentration was observed after gas exposure at the pressure of 1 Pa, that is relevant to operating conditions of future fusion devices, however the brazing alloy and tantalum accumulate a large amount of deuterium in the case of the pressure above 100 Pa that leads to failure of the joint. The D retention after D plasma irradiation was substantial, but nearly independent on the fluence and the thickness of the W layer due to absorption from surrounding D2 gas.
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Deuterium retention in the elements of plasma facing components for the DEMO first wall / Bobyr, N. [et al.] // Journal of Nuclear Materials. - 2022. - 567. - 10.1016/j.jnucmat.2022.153837
URI
https://www.doi.org/10.1016/j.jnucmat.2022.153837
https://www.scopus.com/record/display.uri?eid=2-s2.0-85131909570&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000814518600005
https://openrepository.mephi.ru/handle/123456789/27987
https://www.scopus.com/record/display.uri?eid=2-s2.0-85131909570&origin=resultslist
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS_CPL&DestLinkType=FullRecord&UT=WOS:000814518600005
https://openrepository.mephi.ru/handle/123456789/27987