Helium irradiation of Y2O3-Fe bilayer system

SCRIPTA MATERIALIA

卷:162

Article

Mairov, A.¹  Frazer, D.^2,3  Hosemann, P.²  Sridharan, K.¹ 

[1] Univ Wisconsin Madison, Dept Engn Phys, Madison, WI 53706 USA

[2] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

[3] Los Alamos Natl Lab, Mat Sci & Technol Div, Los Alamos, NM 87545 USA

关键词: Thin films;    Interface wetting;    Helium bubbles;    STEM;    ODS;   

DOI  :  10.1016/j.scriptamat.2018.11.006

来源: Elsevier

【 摘 要 】

Y2O3/Fe bilayer systems and associated interfaces with different crystallographic orientations were implanted with helium. High resolution scanning transmission electron microscopy (HRSTEM) analysis showed that implanted helium formed larger sized bubbles at the interface than within the individual film layers. The bubbles at the interface were located on the oxide side of the interface and only wetted a small area of the interface. In contrast, bubbles nucleating at grain boundaries within the iron layer were observed to symmetrically form across the grain boundaries, suggesting remarkable differences in helium bubble nucleation between metal/oxide interfaces and grain boundaries in metals. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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