Journal
PHYSICA SCRIPTA
Volume T170, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1402-4896/aa81f5
Keywords
DEMO; plasma-facing materials; safety; smart tungsten alloys; oxidation; plasma sputtering
Categories
Funding
- Euratom research and training programme [633053]
Ask authors/readers for more resources
Smart tungsten-based alloys are under development as plasma-facing components for a future fusion power plant. Smart alloys are planned to adjust their properties depending on environmental conditions: acting as a sputter-resistant plasma-facing material during plasma operation and suppressing the sublimation of radioactive tungsten oxide in case of an accident on the power plant. New smart alloys containing yttrium are presently in the focus of research. Thin film smart alloys are featuring an remarkable 10(5)-fold suppression of mass increase due to an oxidation as compared to that of pure tungsten at 1000 degrees C. Newly developed bulk smart tungsten alloys feature even better oxidation resistance compared to that of thin films. First plasma test of smart alloys under DEMO-relevant conditions revealed the same mass removal as for pure tungsten due to sputtering by plasma ions. Exposed smart alloy samples demonstrate the superior oxidation performance as compared to tungsten-chromium-titanium systems developed earlier.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available