Size effect of ligaments on charge induced surface stress response of nanoporous Pd prepared by dealloying
Size effect of ligaments on charge induced surface stress response of nanoporous Pd prepared by dealloying
复制标题
韧带尺寸效应对脱合金纳米多孔Pd电荷诱导表面应力响应的影响
DOI：
10.1016/j.scriptamat.2016.05.040
复制
发表时间：
2016-10-01
影响因子：
6
通讯作者：
Liu, F.
中科院分区：
文献类型：
--
作者：
Cao, Y. K.;Ma, X. Y.;Liu, F.
通过脱合金和随后的热粗化制备了具有不同韧带宽度（w）的纳米多孔钯。通过原位膨胀法测量了所制备样品的电毛细管耦合参数 zeta，通常用于量化电荷诱导的表面应力响应。发现当w小于临界值w(crit) = 49.0 +/- 7.4 nm时，受韧带尺寸效应的影响，当w从49.0 +/- 7.4 nm减小到112 +/- 1.4 nm时，zeta绝对值从0.76 V增加到1.03 V；当 w > w(crit) 时，韧带对 zeta 的尺寸影响可以忽略不计。 (C) 2016 Acta Materialia Inc. 由 Elsevier Ltd 出版。保留所有权利。
Nanoporous Pd with different ligament widths (w) were prepared by dealloying and subsequent thermal coarsening. The electrocapillary coupling parameter zeta, which is usually used to quantify the charge induced surface stress response, of the as-prepared samples was measured by an in-situ dilatometry method. It is found that when w is smaller than a critical value w(crit) = 49.0 +/- 7.4 nm, influenced by the size effect of ligaments, the absolute value of zeta increases from 0.76 V to 1.03 V by decreasing w from 49.0 +/- 7.4 nm to 112 +/- 1.4 nm; while w > w(crit) the size effect of ligaments on zeta becomes negligible. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.