Isotope exchange investigation of nitrogen redistribution in expanded austenite
Isotope exchange investigation of nitrogen redistribution in expanded austenite
Christiansen, T. L.; Drouet, M.; Martinaviciusc, A.; Somers, M. A. J.
Abstract
Sequential plasma and gaseous nitriding of Fe–18Cr–10Ni–3Mo stainless steel at 390 C with 14N and 15N isotopes followed by denitriding in flowing hydrogen was investigated. Redistribution of plasma-inserted nitrogen atoms (15N) by subsequent gaseous nitriding (14N) was observed. Denitriding after plasma- and gaseous nitriding resulted in predominant retraction of 14N, and only a minor amount of 15N. The nitrogen isotope diffusion behaviour is explained by two different states of nitrogen bonding and shortrange ordering between nitrogen and chromium.
Keywords: Nitriding; Nuclear reaction analysis; X-ray diffraction (XRD); Stainless steel
Beteiligte Forschungsanlagen
- Ionenstrahlzentrum DOI: 10.17815/jlsrf-3-159
Verknüpfte Publikationen
- DOI: 10.17815/jlsrf-3-159 is cited by this (Id 19199) publication
- Scripta Materialia 69(2013), 582-585
Permalink: https://www.hzdr.de/publications/Publ-19199