Dislocations mediate hydrogen retention in tungsten
2014; IOP Publishing; Volume: 54; Issue: 4 Linguagem: Inglês
10.1088/0029-5515/54/4/042004
ISSN1741-4326
AutoresD. Terentyev, V.I. Dubinko, A. Bakaev, Y. Zayachuk, W. Van Renterghem, Petr Grigorev,
Tópico(s)Advanced materials and composites
ResumoIn this letter, a comprehensive mechanism for the nucleation and growth of bubbles on dislocations under plasma exposure of tungsten is proposed. The mechanism reconciles long-standing experimental observations of hydrogen isotopes retention, essentially defined by material microstructure, and so far not fully explained. Hence, this work provides an important link to unify material's modelling with experimental assessment of W and W-based alloys as candidates for plasma facing components.
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