Scaling equation for the elastic modulus of nanoporous gold with "fixed" network connectivity
Scaling equation for the elastic modulus of nanoporous gold with "fixed" network connectivity
复制标题
具有“固定”网络连接的纳米多孔金弹性模量的缩放方程
DOI：
10.1063/1.4984108
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发表时间：
2017-05-22
影响因子：
4
通讯作者：
Jin, Hai-Jun
中科院分区：
文献类型：
--
作者：
Liu, Ling-Zhi;Jin, Hai-Jun
我们报告说，在Pt掺杂的纳米多孔Au（Ag），而网络连接保持不变，弹性模量（E）的变化与相对密度（φ）在幂律关系，E α φ（n），指数n = 2.2 +/- 0.1，这符合经典的Gibson-Ashby标度方程（n = 2）。结果表明，只要适当考虑网络的连通性和尺寸效应，np金属的力学响应可以用经典的标度方程来描述。我们还表明，粗化引起的网络连接性的降低可以通过提高纳米多孔结构的相对密度来抑制。出版社：AIP Publishing
We report that in a Pt-doped nanoporous Au(Ag), while the network connectivity was maintained constant, the elastic modulus (E) varied with relative density (phi) in a power-law relation, E alpha phi(n), with an exponent of n = 2.2 +/- 0.1, which agreed well with the classical Gibson-Ashby scaling equation (n = 2). It testifies that the mechanical response of np metals can be well described by the classical scaling equations, providing that the network connectivity and the size effects are taken into account properly. We also demonstrate that the coarsening-induced reduction in the network connectivity can be suppressed by enhancing the relative density of the nanoporous structure. Published by AIP Publishing.