Dislocations mediate hydrogen retention in tungsten

Dmitry Terentyev; A. Dubinko; Alexander Bakaev; Yevhen Zayachuk; Wouter Van Renterghem; Petr Grigorev; Giovanni Bonny

doi:10.1088/0029-5515/54/4/042004

Dislocations mediate hydrogen retention in tungsten

Dmitry Terentyev, A. Dubinko, Alexander Bakaev, Yevhen Zayachuk, Wouter Van Renterghem, Petr Grigorev, Giovanni Bonny

Research output › peer-review

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.

Original language	English
Pages (from-to)	1-5
Journal	International Atomic Energy Agency 10.1088/0029-5515/54/4/042004
Volume	54
Issue number	4
DOIs	https://doi.org/10.1088/0029-5515/54/4/042004
State	Published - 21 Mar 2014

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Cite this

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T1 - Dislocations mediate hydrogen retention in tungsten

AU - Terentyev, Dmitry

AU - Dubinko, A.

AU - Bakaev, Alexander

AU - Zayachuk, Yevhen

AU - Van Renterghem, Wouter

AU - Grigorev, Petr

A2 - Bonny, Giovanni

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AB - 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.

KW - dislocations

KW - tungsten

KW - retention

KW - hydrogen

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