Mechanical strength of nanoporous gold fabricated by dealloying

被引：133
|
作者：
Hakamada, Masataka [1 ]
Mabuchi, Mamoru [1 ]
机构：
[1] Kyoto Univ, Grad Sch Energy Sci, Dept Energy Sci & Technol, Kyoto 6068501, Japan
来源：
SCRIPTA MATERIALIA | 2007年 / 56卷 / 11期
关键词：
nanostructured materials; nanoindentation; hardness; Hall-Petch effect; nanoporous metal;
D O I：
10.1016/j.scriptamat.2007.01.046
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effect of ligament size on the yield stress of nanoporous Au specimens fabricated by dealloying was investigated by nanoindentation tests. A decrease in ligament size resulted in an increase in the yield stress, and the yield stress of the nanosized An ligament was much higher than that of bulk polycrystalline gold. It is suggested that the size and surface effects, such as a reduction in the number of defects in grains, are important in strengthening of nanoporous Au. (C) 2007 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1003 / 1006
页数：4
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