期刊
SCRIPTA MATERIALIA
卷 177, 期 -, 页码 146-150出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2019.10.013
关键词
3D printing; Additive manufacturing; Direct ink writing; Hierarchical nanoporous Cu; Dealloying
类别
资金
- U.S. Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- Laboratory Directed Research and Development project [19-SI-005]
- University of Massachusetts Faculty Startup Fund
- VIEST [NSF MRSEC 17-20530]
- NSF MRI grant [17-25969]
- ARO DURIP grant [W911NF-17-1-0282]
- NSF [DMR-0520547]
Three-dimensional (3D) hierarchical nanoporous Cu (3DHNP-Cu) is synthesized using a combination of direct ink writing (DIW) based 3D printing, thermal sintering, and chemical dealloying of Mn-Cu alloys. Through tuning processing conditions such as ink composition and cooling rate (after sintering), with consideration of Mn loss during sintering, 3DHNP-Cu with fully bicontinuous nanostructures and negligible residual Mn can be produced after dealloying. The 3DHNP-Cu is comprised of structural features that span seven orders of magnitude, where DIW digitally controls macroscale porous features, thermal sintering and degradation of the binding polymer determines microscale porous features, and dealloying gives rise to nanoscale pores. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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