Surface-induced reactions of absorbed hydrogen under mutual mechanical forces

Autor:	Elisa Roman, J.L. de Segovia, Roman Nevshupa
Rok vydání:	2005
Předmět:	Electrolysis Materials science Hydrogen Analytical chemistry chemistry.chemical_element Ion current Condensed Matter Physics Spectral line Surfaces Coatings and Films law.invention Adsorption Deuterium chemistry law Desorption Total pressure Instrumentation
Zdroj:	Vacuum. 80:241-246
ISSN:	0042-207X
Popis:	The present work describes a preliminary study of friction-induced surface reactions in ultra-high vacuum of H and D atoms adsorbed on stainless steel. Deuterium has been implanted in the sample by electrolysis of D2O. A pin with a ball end under controlled load produces the friction in alternating passes across the surface. A sample manipulator controls the normal and tangential loads of the pin on the surface. The spectra of the total pressure and ion current of H 2 + as a function of friction time at different sweeping speeds are presented. Electron-stimulated desorption (ESD) has been used to verify the positive implantation of D atoms into the sample. The friction experiments on D-doped samples show that the reaction of the H and D surface atoms is to desorb as H2 and HD, i.e. second-order desorption. ESD also shows the presence of F and O species on the surface.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3652db8d204b8e9b594af5fbb07e6a29 https://doi.org/10.1016/j.vacuum.2005.07.040 Zobrazit plný text záznamu Full Text from ScienceDirect