Helium implanted FeCr alloys studied by positron annihilation lifetime technique
The influence of chromium on the radiation damage resistance of iron based alloys has been studied using conventional positron lifetime technique and a pulsed low energy positron beam. To simulate high neutron flux, the helium implantation has been used. Different levels of helium doses (6.24·10¹⁷–3...
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| Datum: | 2009 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | English |
| Veröffentlicht: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2009
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| Schriftenreihe: | Вопросы атомной науки и техники |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/96342 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Helium implanted FeCr alloys studied by positron annihilation lifetime technique / V. Krsjak, W. Egger, M. Petriska, S. Sojak // Вопросы атомной науки и техники. — 2009. — № 4. — С. 109-115. — Бібліогр.: 20 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| Zusammenfassung: | The influence of chromium on the radiation damage resistance of iron based alloys has been studied using conventional positron lifetime technique and a pulsed low energy positron beam. To simulate high neutron flux, the helium implantation has been used. Different levels of helium doses (6.24·10¹⁷–3.12·10¹⁸ cm⁻²) corresponding to a local damage of up to 90 dpa were accumulated in a thin <1 μm region. Four different binary FeCr alloys (2.6; 4.6; 8.4; 11.6 wt.% of Cr) have been used in this study. The obtained results show that chromium has a significant effect on the size and distribution of the created defects. The character of these defects has been determined as large voids (>1 nm) and small vacancy clusters together with the initial dislocations and small point defects. |
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