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Hierarchical porous metals with deterministic 3D morphology and shape via de-alloying of 3D printed alloys

Patent ·
OSTI ID:1860064

The present disclosure relates to a method for forming a three dimensional, hierarchical, porous metal structure with deterministically controlled 3D multiscale pore architectures. The method may involve providing a feedstock able to be applied in an additive manufacturing process, and using an additive manufacturing process to produce a three dimensional (3D) structure using the feedstock. The method may involve further processing the 3D structure through at least a de-alloying operation to form a metallic 3D structure having an engineered, digitally controlled macropore morphology with integrated nanoporosity.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-07NA27344
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Number(s):
11,173,545
Application Number:
15/790,810
OSTI ID:
1860064
Country of Publication:
United States
Language:
English

References (8)

Direct Write Technologies book January 2010
Printing Ink Formulations book January 2016
Cellular Ti–6Al–4V structures with interconnected macro porosity for bone implants fabricated by selective electron beam melting journal September 2008
Nanoporous Gold Ribbons with Bimodal Channel Size Distributions by Chemical Dealloying of Al−Au Alloys journal January 2009
Developing Monolithic Nanoporous Gold with Hierarchical Bicontinuity Using Colloidal Bijels
  • Lee, Matthew N.; Santiago-Cordoba, Miguel A.; Hamilton, Christopher E.
  • The Journal of Physical Chemistry Letters, Vol. 5, Issue 5 https://doi.org/10.1021/jz5001962
journal February 2014
Hierarchical Nested-Network Nanostructure by Dealloying journal June 2013
Nanoporous bimetallic Pt–Au alloy nanocomposites with superior catalytic activity towards electro-oxidation of methanol and formic acid journal January 2011
Hierarchical nanoporous metals as a path toward the ultimate three-dimensional functionality journal October 2017

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