The Study of Thermally Stimulated Hydrogen Evolution from Steels by Thermal Desorption Mass Spectrometry Technique
| Authors | S.N. Danilchenko1 , V.D. Chvanov1, A.O. Stepanenko2 , A.N. Kalinkevich1 , A.V.Kochenko1, P.S. Danylchenko2,3, V.N. Kuznetsov1 |
| Affiliations |
1Institute of Applied Physics NASU, 58, Petropavlivska St., 40000 Sumy, Ukraine 2Sumy State University, 2, Rymsky-Korsakov St., 40007 Sumy, Ukraine 3Institute of Physics, Faculty of Science, P.J. Šafárik University, 9, Park Angelinum, 04154 Košice, Slovak Republic |
| Е-mail | |
| Issue | Volume 11, Year 2019, Number 6 |
| Dates | Received 25 October 2019; revised manuscript received 07 December 2019; published online 13 December 2019 |
| Citation | S.N. Danilchenko, V.D. Chvanov, A.O. Stepanenko, et al., J. Nano- Electron. Phys. 11 No 6, 06008 (2019) |
| DOI | https://doi.org/10.21272/jnep.11(6).06008 |
| PACS Number(s) | 07.75. + h |
| Keywords | Hydrogen (20) , Steel (3) , Thermal desorption mass spectrometry, Kinetic parameters, Hydrogen thermal extraction. |
| Annotation |
The hydrogen removal from electrolytically hydrogenated samples of two different steels (ferritic and austenitic) was experimentally studied. The temperature dependences of hydrogen evolution were obtained using the set-up with hot vacuum extraction and mass spectrometric registration of the volatile components. For both steels, the process of hydrogen evolution can be described as consisting of two stages, which are overlapped with different degrees of resolution. In assumption that each moiety is related to a certain form of hydrogen in material (specific trapping site), the kinetic parameters of the process of the gas extraction were estimated for two stages of both samples. The similarity of the kinetic parameters of the first stage indicates the same form (or location) of hydrogen in both steel samples. This is believed to be surface localized hydrogen. The kinetic parameters of the second (“high temperature”) stage have more significant differences, which may indicate different kinetics of the thermally stimulated removal of hydrogen from the near-surface layers of -Fe and -Fe. These parameters can serve as markers of the localization of hydrogen in various steels and allow one to compare the ratios of different forms of hydrogen in such materials. |
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