| Autor: |
A. Manhard, U. von Toussaint, M. Balden, S. Elgeti, T. Schwarz-Selinger, L. Gao, S. Kapser, T. Płociński, J. Grzonka, M. Gloc, Ł. Ciupiński |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Nuclear Materials and Energy, Vol 12, Iss , Pp 714-719 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
2352-1791 |
| DOI: |
10.1016/j.nme.2016.10.014 |
| Popis: |
Up to now, analyzing the production of dislocation-type defects in the subsurface region of plasma or ion-exposed tungsten samples has been hampered by the challenging production of suitable cross-section samples for transmission electron microscopy. We present two reliable methods based on precision electropolishing to prepare cross-sections of tungsten that allow direct imaging of dislocation-type defects by scanning as well as by transmission electron microscopy. Using these methods, we are able to demonstrate a clear enhancement of the dislocation density in the caps of blisters on tungsten exposed to H isotope plasma, i.e., of surface morphologies that are correlated to subsurface cavities. As a benchmark, we also show a cross-section of tungsten irradiated by 20 MeV W6+ ions. Keywords: Tungsten, Plasma, Blistering, Cross-section, Electropolishing, Dislocations |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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