Plasma-wall interaction of advanced materials

被引：27

作者：

Coenen, J. W. ^{[1
]}

Berger, M. ^{[1
]}

Demkowicz, M. J. ^{[3
]}

Matveev, D. ^{[1
]}

Manhard, A. ^{[2
]}

Neu, R. ^{[2
,4
]}

Riesch, J. ^{[2
]}

Unterberg, B. ^{[1
]}

Wirtz, M. ^{[1
]}

Linsmeier, Ch. ^{[1
]}

机构：

[1] Forschungszentrum Julich GmbH, Inst Energie & Klimaforschung, TEC, D-52425 Julich, Germany

[2] Max Planck Inst Plasma Phys, D-85748 Garching, Germany

[3] Texas A&M Univ, Mat Sci & Engn, College Stn, TX 77843 USA

[4] Tech Univ Munich, D-85748 Garching, Germany

来源：

NUCLEAR MATERIALS AND ENERGY | 2017年 / 12卷

关键词：

FUSION POWER-PLANT; TUNGSTEN MATERIALS; HELIUM BUBBLES; DEMO; IMPLANTATION; NUCLEATION; DESIGN; GROWTH; STEELS;

D O I：

10.1016/j.nme.2016.10.008

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

DEMO is the name for the first stage prototype fusion reactor considered to be the next step after ITER. For the realization of fusion energy especially materials questions pose a significant challenge already today. Advanced materials solution are under discussion in order to allow operation under reactor conditions [1] and are already under development used in the next step devices. Apart from issues related to material properties such as strength, ductility, resistance against melting and cracking one of the major issues to be tackled is the interaction with the fusion plasma. Advanced tungsten (W) materials as discussed below do not necessarily add additional lifetime issues, they will, however, add concerns related to erosion or surface morphology changes due to preferential sputtering. Retention of fuel and exhaust species are one of the main concerns. Retention of hydrogen will be one of the major issues to be solved in advanced materials as especially composites and alloys will introduce new hydrogen interactions mechanisms. Initial calculations show these mechanisms. Especially for Helium as the main impurity species material issues arise related to surfaces modification and embrittlement. Solutions are proposed to mitigate effects on material properties and introduce new release mechanisms. (C) 2016 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license.

引用

页码：307 / 312

页数：6

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