期刊
FUSION ENGINEERING AND DESIGN
卷 146, 期 -, 页码 1431-1436出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.fusengdes.2019.02.098
关键词
Plasma facing materials; Tungsten; Composites; High heat flux tests; Fusion; DEMO
资金
- Euratom research and training programme [633053]
Material issues pose a significant challenge for future fusion reactors like DEMO. When using materials in a fusion environment a highly integrated approach is required. Damage resilience, power exhaust, as well as oxidation resistance during accidental air ingress are driving issues when deciding for new materials. Neutron induced effects e.g. transmutation adding to embrittlement are crucial to material performance. Here advanced materials such as tungsten fibre-reinforced tungsten W-f/W and fibre-reinforced copper W-f/Cu composites could allow the step towards a fusion reactor. Recent developments in the area W-f/W mark a possible path towards a component mock-up early enough for utilisation in DEMO. High heat-flux tests show that having short fibres at the exposed surface leads to their selective erosion and melting. Initial tests in the linear plasma device PSI-2 confirm this behaviour.
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