文章基本信息

标题：Ultralight metal foams
本地全文：下载
作者：Bin Jiang ; Chunnian He ; Naiqin Zhao 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：5
DOI：10.1038/srep13825
出版社：Springer Nature
摘要：Ultralight ( 3) cellular materials are desirable for thermal insulation; battery electrodes; catalyst supports; and acoustic, vibration, or shock energy damping. However, most of these ultralight materials, especially ultralight metal foams, are fabricated using either expensive materials or complicated procedures, which greatly limit their large-scale production and practical applications. Here we report a simple and versatile method to obtain ultralight monolithic metal foams. These materials are fabricated with a low-cost polymeric template and the method is based on the traditional silver mirror reaction and electroless plating. We have produced ultralight monolithic metal foams, such as silver, nickel, cobalt, and copper via this method. The resultant ultralight monolithic metal foams have remarkably low densities down to 7.4 mg/cm³ or 99.9% porosity. The metal foams have a long flat stress-train curve in compression tests and the densification strain ε_D of the Ni/Ag foam with a porosity of 99.8% can reach 82%. The plateau stress σ_pl was measured and found to be in agreement with the value predicted by the cellular solids theory.