Plasma and Fusion Research

Volume 15, 2405016 (2020)

Regular Articles

Hydrogen Permeation in Fusion Materials and the Development of Tritium Permeation Barriers
Anne HOUBEN, Marcin RASINSKI and Christian LINSMEIER
Forschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung – Plasmaphysik, Partner of the Trilateral Euregio Cluster (TEC), 52425 Jülich, Germany
(Received 29 November 2019 / Accepted 16 February 2020 / Published 6 April 2020)

Abstract

Fuel retention and hydrogen permeation in the first wall of future fusion devices are crucial factors. Due to safety issues and in order to guarantee an economical reactor operation, tritium accumulation into reactor walls and permeation through walls have to be estimated and prevented. Therefore, studies of permeation in the fusion materials are performed and the need for tritium permeation barriers (TPB) is verified. The development of TPB layers is explained. A reliable way of comparing different TPB layers and the estimation of the permeation reduction effect of a TPB layer on different bulk materials is enabled by calculation of the layer permeability.

Keywords

gas-driven hydrogen permeation measurement, tritium permeation barrier, yttrium oxide, reduced activation ferritic martensitic steel, 316L(N)-IG steel

DOI: 10.1585/pfr.15.2405016

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