New oxidation-resistant tungsten alloys for use in the nuclear fusion reactors

• DOI: 10.1088/1402-4896/aa81f5
• Publication Date: 2017-09-13T15:14:09Z
• Authors: A Litnovsky; T Wegener; F Klein; Ch Linsmeier; M Rasinski; A Kreter; X Tan; J Schmitz; J W Coenen; Y Mao; J Gonzalez-Julian; M Bram
• Keywords: Fusion power; Sublimation

Smart tungsten-based alloys are under development as plasma-facing components for a future fusion power plant. planned to adjust their properties depending on environmental conditions: acting sputter-resistant material during plasma operation and suppressing the sublimation of radioactive tungsten oxide in case an accident New smart containing yttrium presently focus research. Thin film featuring remarkable 105-fold suppression mass increase due oxidation compared that pure at 1000 °C. Newly developed bulk feature even better resistance thin films. First test DEMO-relevant conditions revealed same removal sputtering by ions. Exposed alloy samples demonstrate superior performance tungsten–chromium–titanium systems earlier.