Oxidation of Zirconium after Argon Ion Irradiation
| Authors | S.M. Duvanov , V.A. Baturin , A.Yu. Karpenko |
| Affiliations | Institute of Applied Physics NAS Ukraine, 58, Petropavlovskaja Str., 40030 Sumy, Ukraine |
| Е-mail | |
| Issue | Volume 7, Year 2015, Number 1 |
| Dates | Received 03 December 2014; published online 25 March 2015 |
| Citation | S.M. Duvanov, V.A. Baturin, A.Yu. Karpenko, J. Nano- Electron. Phys. 7 No 1, 01035 (2015) |
| DOI | |
| PACS Number(s) | 68.47.De, 25.55.Ci, 68.49. – h, 81.16.Pr, 66.30. – h |
| Keywords | Zirconium (3) , Ion irradiation (4) , Oxidation (4) , Projected range. |
| Annotation | An oxidation of the near surface layers of pure zirconium samples resulting from ion irradiation in residual gas atmosphere of vacuum chamber was observed in the work. The irradiation was performed with 100 keV Ar+ ions at fluence of 1 × 1017 cm – 2, temperature of the samples did not exceed 150 °С. An element analysis of the modified layers was carried out using Rutherford (RBS) and Resonant Elastic Backscattering Spectrometry (ResBS) of 4He ions (resonance in 16O(4He,4He)16O scattering at about 3,045 MeV). A stoichiometric composition of the surface oxide film was found out related to ZrO2. The films were coloured in violet. A thickness of the oxide layer was measured to be about 660 nm, which is by about an order of magnitude greater than a value of the calculated projected range of Ar ions in Zr (Rp 69,3 nm, SRIM2008 code). It is supposed that the oxidation has a linear (or destructive) character. The obtained results allow us to propose an alternative mechanism of the enhanced anticorrosion resistance of U, Zr, and its alloys after irradiation with He, Ar, Kr, Xe ions experimentally observed in the literary previously. A possible mechanism of the fast oxygen diffusion and formation of broad deep oxide layer was discussed. |
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List of References |
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