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Title: Three-Dimensional Morphological and Chemical Evolution of Nanoporous Stainless Steel by Liquid Metal Dealloying [3D Morphological and Chemical Evolution of Nanoporous Stainless Steel by Liquid Metal Dealloying]

Journal Article · · ACS Applied Materials and Interfaces
ORCiD logo [1];  [2];  [3];  [4];  [5];  [4];  [4];  [2];  [6]
  1. Stony Brook Univ., Stony Brook, NY (United States)
  2. Tohoku Univ., Sendai (Japan)
  3. Argonne National Lab. (ANL), Argonne, IL (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States)
  5. Carl Zeiss X-ray Microscopy, Inc., Pleasanton, CA (United States)
  6. Stony Brook Univ., Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)

Nanoporous materials, especially those fabricated by liquid metal dealloying processes, possess great potential in a wide range of applications due to their high surface area, bi-continuous structure—with both open pores for transport and solid phase for conductivity or support—and economical materials cost. Here we used x-ray nano-tomography and x-ray fluorescence microscopy to reveal the three-dimensional (3D) morphology and elemental distribution within materials. Focusing on nanoporous stainless steel, we evaluated the 3D morphology of the dealloying-front and established a quantitative processing-structure-property relationship at a later stage of dealloying. The morphological differences of samples created by liquid metal dealloying and aqueous dealloying methods were also discussed. Here, we concluded that it is particularly important to consider the dealloying, coarsening and densification mechanisms in influencing the performance-determining, critical 3D parameters such as tortuosity, pore size, porosity, curvature and interfacial shape.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357; SC0012704
OSTI ID:
1416146
Alternate ID(s):
OSTI ID: 1434768
Report Number(s):
BNL-203491-2018-JAAM; 137284; TRN: US1800883
Journal Information:
ACS Applied Materials and Interfaces, Vol. 9, Issue 39; ISSN 1944-8244
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 34 works
Citation information provided by
Web of Science

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Cited By (2)

Bi-continuous pattern formation in thin films via solid-state interfacial dealloying studied by multimodal characterization journal January 2019
Solid State Porous Metal Production: A Review of the Capabilities, Characteristics, and Challenges journal January 2018