Neutron imaging
- Neutron imaging methods are appropriate to investigate hydrogen distributions in several metallic systems. The large total neutron cross section of hydrogen compared to those of elements or isotopes, respectively, in usual structural materials like steels or zirconium alloys allows the detection even of small amounts of hydrogen in such materials. The dependence of the total macroscopic neutron cross section of the sample or component on the hydrogen concentration can be determined experimentally by means of calibration specimens with known hydrogen concentrations. Such a calibration allows for a full quantitative determination of the local hydrogen concentration with a spatial resolution better than 20 μm. Because neutron radiography is fast and non-destructive, in situ investigations of time-dependent processes like hydrogen absorption and release or hydrogen bulk diffusion can be performed. This chapter gives an introduction into the main neutron imaging methods, radiography andNeutron imaging methods are appropriate to investigate hydrogen distributions in several metallic systems. The large total neutron cross section of hydrogen compared to those of elements or isotopes, respectively, in usual structural materials like steels or zirconium alloys allows the detection even of small amounts of hydrogen in such materials. The dependence of the total macroscopic neutron cross section of the sample or component on the hydrogen concentration can be determined experimentally by means of calibration specimens with known hydrogen concentrations. Such a calibration allows for a full quantitative determination of the local hydrogen concentration with a spatial resolution better than 20 μm. Because neutron radiography is fast and non-destructive, in situ investigations of time-dependent processes like hydrogen absorption and release or hydrogen bulk diffusion can be performed. This chapter gives an introduction into the main neutron imaging methods, radiography and tomography, and gives as examples results of neutron imaging investigations of hydrogen in different steels and in zirconium alloys,respectively.…
Autor*innen: | Axel GriescheORCiD, M. Große, B. Schillinger |
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Persönliche Herausgeber*innen: | H. Fritzsche, J. Huot, D. Fruchart |
Dokumenttyp: | Buchkapitel |
Veröffentlichungsform: | Verlagsliteratur |
Sprache: | Englisch |
Titel des übergeordneten Werkes (Englisch): | Neutron Scattering and Other Nuclear Techniques for Hydrogen in Materials |
Jahr der Erstveröffentlichung: | 2016 |
Verlag: | Springer Nature |
Verlagsort: | Zurich, Switzerland |
Erste Seite: | Chapter 7, 193 |
Letzte Seite: | 225 |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | Hydrogen; Neutron imaging; Neutron radiography |
DOI: | 10.1007/978-3-319-22792-4_7 |
ISSN: | 1868-0380 |
ISSN: | 1868-0372 |
ISBN: | 978-3-319-22792-4 |
ISBN: | 978-3-319-22791-7 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 07.06.2016 |
Referierte Publikation: | Ja |
Datum der Eintragung als referierte Publikation: | 12.06.2017 |