標題: Mechanical properties of three-dimensional ordered macroporous Ni foam
作者: Liao, Chen-Hong
Hung, Pei-Sung
Cheng, Yu
Chang, Shou-Yi
Wua, Pu-Wei
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Nano indentation;Ni;Structural;Colloidal processing;Inverse opals
公開日期: 15-Mar-2018
摘要: We employ a sequential electrophoresis and electrodeposition approach to fabricate a large-area ordered macroporous Ni foam in 5 x 5 cm(2) via a template route. Images from scanning electron microscope exhibit hierarchical structures with hexagonally-arranged pores and interconnected pore channels. For as-prepared and annealed ordered macroporous Ni foams, the loading-depth profiles from nano indentation show typical elastic and plastic deformation. Upon annealing, moderate growth in grain size is observed, resulting in lower hardness and Young's modulus. In contrast, for disordered macroporous Ni foam and solid Ni film, nano indentation results reveal larger hardness and undetermined Young's modulus. The ordered macroporous foam reveals hardness that is 22% of that of solid Ni film, a value close to its theoretic packing density of 24%. (C) 2017 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.matlet.2017.12.087
http://hdl.handle.net/11536/144498
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2017.12.087
期刊: MATERIALS LETTERS
Volume: 215
起始頁: 152
結束頁: 156
Appears in Collections:Articles