Selection of materials for tokamak plasma facing elements based on a liquid tin capillary pore system

19th Conference on Plasma Surface Interactions

Lyublinski, I.E.^1,2 ; Vertkov, A.V.^1 ; Zharkov, M Yu^1 ; Sevryukov, O.N.^2 ; Dzhumaev, P.S.^2 ; Shumskiy, V.A.^2 ; Ivannikov, A.A.^2

JSC Red Star, Moscow, Russia^1

National Research, Nuclear University, MEPhI (Moscow Engineering Physics Institute), 31 Kashirskoe highway, Moscow

115409, Russia^2

关键词: Alternative solutions;    Corrosion studies;    Corrosion tests;    Isothermal conditions;    Plasma-facing components;    Saturated vapour pressure;    Selection of materials;    Tokamak reactors;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/748/1/012014/pdf
DOI  :  10.1088/1742-6596/748/1/012014

来源: IOP

【 摘 要 】

Capillary-Pore Systems (CPS) filled by liquid metals are considered as an alternative solution of materials choice for plasma facing component of tokamak reactor. Tin is viewed as one of the candidates for CPS because it has lower corrosiveness than gallium and lower saturated vapour pressure compared to lithium. The corrosion resistance of Mo, Nb and W in pure liquid tin was investigated. The corrosion tests were carried out in the static isothermal conditions at a temperature up to 1050°C. As a result of the corrosion study, it was found that Mo does not corrode in liquid Sn, as opposed to Nb and is compatible with liquid tin in temperatures of up to approx. 1000°C. This allows considering Mo as an alloy base material of the in-vessel tokamak elements based on liquid tin capillary pore systems.