Arrest of He bubble growth in Cu-Nb multilayer nanocomposites

被引：112

作者：

Hattar, K. ^{[1
,2
]}

Demkowicz, M. J. ^{[1
]}

Misra, A. ^{[1
]}

Robertson, I. M. ^{[2
]}

Hoagland, R. G. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Univ Illinois, Urbana, IL 61801 USA

来源：

SCRIPTA MATERIALIA | 2008年 / 58卷 / 07期

关键词：

transmission electron microscopy (TEM); composites; layered structures and superlattices; microstructure; ion beam methods : implantation;

D O I：

10.1016/j.scriptamat.2007.11.007

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Transmission electron microscopy on Cu-Nb multilayer nanocomposites implanted with 10(17) cm(-2) of 33 keV He-4(+) at 763 K revealed uniformly dispersed He bubbles of 1-2 nm diameter in Nb and a broad distribution of larger ones in Cu. Bubbles in Cu were confined by the neighboring Nb, limiting their size normal to Cu-Nb interfaces to the Cu layer. The conditions under which layered composite morphology may be used to control He bubble distributions in materials under irradiation are discussed. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：541 / 544

页数：4

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