Hydrogen transport through stainless steel under plasma irradiation

7th Conference on Low temperature Plasma in the Processes of Functional Coating Preparation

Airapetov, A.A.^1 ; Begrambekov, L.B.^1 ; Kaplevsky, A.S.^1 ; Sadovskiy, Ya A.^1

National Research Nuclear University MEPhI, Kashirskoe shosse 31, Moscow

115409, Russia^1

关键词: Deuterium plasma;    Hydrogen release;    Hydrogen transport;    Irradiation parameters;    Metal temperature;    Oxygen atmosphere;    Plasma irradiations;    Stainless steel surface;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/669/1/012027/pdf
DOI  :  10.1088/1742-6596/669/1/012027

来源: IOP

【 摘 要 】

The paper presents the results of investigation of gas exchange through stainless steel surface of the plasma chamber under irradiation with hydrogen atoms in oxygen atmosphere or oxygen contaminated hydrogen plasma. Dependence of this process on various irradiation parameters, such as the metal temperature, energy of irradiating ions, gas composition of plasma are studied. It is shown, that desorption from stainless steel is activated with the increase of the plasma chamber walls temperature and energy of irradiating ions. Hydrogen release occurs also under irradiation of the walls by helium and argon plasmas added with oxygen, however the amount of released hydrogen is several times lower than in the case of irradiation with oxygen contaminated deuterium plasma.