Dislocations mediate hydrogen retention in tungsten

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Abstract

In 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 ofWandW-based alloys as candidates for plasma facing components.

Details

Original languageEnglish
Pages (from-to)1-5
JournalInternational Atomic Energy Agency 10.1088/0029-5515/54/4/042004
Volume54
Issue number4
DOIs
Publication statusPublished - 21 Mar 2014

Keywords

  • dislocations, tungsten, retention, hydrogen

ID: 335635