NDLI: Gas exchange processes initiated by the inelastic collisions of hydrogen plasma particles with a stainless-steel surface

Content Provider	Springer Nature Link
Author	Begrambekov, L. B. Grunin, A. V. Kaplevsky, A. S. Sadovskiy, Ya. A. Vergasov, S. V. Shigin, P. A.
Copyright Year	2015
Abstract	The patterns of gas exchange between deuterium plasma and the walls of a vacuum chamber made from 12Cr18Ni10Ti (0.12% C, 18% Cr, 10% Ni, less than 1% Ti) stainless steel and irradiated with deuterium atoms in an atmosphere of deuterium with the addition of oxygen or with ions and atoms of a discharge in deuterium with the addition of oxygen are studied. It is demonstrated that irradiation of the surface of stainless steel under the indicated conditions promotes the diffusion of hydrogen from stainless steel; the implantation of deuterium into stainless steel; and the production on the surface and the desorption of H$_{2}$O, HDO, D$_{2}$O, HD, and H$_{2}$ molecules. Almost all oxygen from the gas mixture in the oxygen concentration range from 0.5 to 30 at % is involved in the production of protonated and deuterated water molecules on the surface. When the oxygen concentration in the mixture of deuterium with oxygen is increased, the release of hydrogen from steel is enhanced. The amount of deuterium captured by stainless steel is lower than the amount of hydrogen removed from it. It is demonstrated that the diffusion of hydrogen towards the surface, its reactions with deuterium and oxygen from the working gas, and the trapping of deuterium in steel may be driven by consecutive surface exothermic reactions initiated by the interaction of deuterium atoms and ions with chromium oxide on the surface of stainless steel.
Starting Page	190
Ending Page	195
Page Count	6
File Format	PDF
ISSN	10274510
Journal	Journal of Surface Investigation. X-ray, Synchrotron and Neutron Techniques
Volume Number	9
Issue Number	1
e-ISSN	18197094
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-02-05
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	hydrogen oxygen plasma stainless steel chromium oxide surface reactions Surfaces and Interfaces, Thin Films
Content Type	Text
Resource Type	Article
Subject	Nanoscience and Nanotechnology Surfaces, Coatings and Films

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