Hydrogen vibrations in austenitic stainless steel
| Autor: | D. Delafosse, H. Wipf, A. Ivanov, Hartmut Fuess, V.G. Gavriljuk, T. Magnin, Sergey Danilkin |
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| Rok vydání: | 2002 |
| Předmět: |
Materials science
Hydrogen Doping Analytical chemistry chemistry.chemical_element General Chemistry engineering.material Spectral line Neutron spectroscopy Condensed Matter::Materials Science Crystallography chemistry Octahedron Molecular vibration Physics::Atomic and Molecular Clusters engineering General Materials Science Physics::Atomic Physics Austenitic stainless steel Nuclear Experiment Bar (unit) |
| Zdroj: | Applied Physics A: Materials Science & Processing. 74:s992-s994 |
| ISSN: | 1432-0630 0947-8396 |
| DOI: | 10.1007/s003390101173 |
| Popis: | The vibrational modes of hydrogen in fcc Fe-25Cr-20Ni stainless steel with a hydrogen content of 0.33 at.% were studied by neutron spectroscopy. Hydrogen doping was performed at 810 K in a hydrogen-gas atmosphere of 190 bar. Neutron spectra were taken at 2 K and 77 K with the spectrometer IN1-BeF (ILL, Grenoble). The spectra show the fundamental hydrogen vibration at ≈130 meV and the second harmonics at ≈260 meV. The frequencies are higher than in other fcc hydrides. In spite of the cubic symmetry of the octahedral hydrogen positions and the low hydrogen content, the inelastic hydrogen peak has a relatively large width and an asymmetric shape. |
| Databáze: | OpenAIRE |
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