Paramagnetic spin resonance in hydrogen-charged stainless austenitic steel

Citation
Bd. Shanina et al., Paramagnetic spin resonance in hydrogen-charged stainless austenitic steel, J PHYS D, 32(3), 1999, pp. 298-304
Citations number
18
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS D-APPLIED PHYSICS
ISSN journal
00223727 → ACNP
Volume
32
Issue
3
Year of publication
1999
Pages
298 - 304
Database
ISI
SICI code
0022-3727(19990207)32:3<298:PSRIHS>2.0.ZU;2-2
Abstract
Hydrogen-charged stainless austenitic steel Cr18Mn20 alloyed with 0.88 mass % of nitrogen is studied using a magnetic spin resonance method. The steel is paramagnetic before as well as after hydrogen charging, which allows one to observe electron spin resonance (ESR). It is shown that hydrogen causes a significant increase of the signal from conduction electrons in the ESR spectrum (CESR), i.e., it increases the concentration of free electrons in the alloy. Hydrogen charging results also in a stronger exchange interactio n between free and localized electrons. The kinetics of desorption of hydro gen from the sample is studied and the value of the enthalpy of hydrogen mi gration in the crystal lattice is evaluated from the studies of the decay o f the CESR signal.