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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]

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, bicontinuous structure with both open pores for transport and solid phase for conductivity or support, and low material cost. Here, we used X-ray nanotomography 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.
Authors:
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)
Publication Date:
Report Number(s):
BNL-203491-2018-JAAM
Journal ID: ISSN 1944-8244; 137284; TRN: US1800883
Grant/Contract Number:
AC02-06CH11357; SC0012704
Type:
Accepted Manuscript
Journal Name:
ACS Applied Materials and Interfaces
Additional Journal Information:
Journal Volume: 9; Journal Issue: 39; Journal ID: ISSN 1944-8244
Publisher:
American Chemical Society (ACS)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States); Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; X-ray CT; XRF; dealloying; fuel cell; nanoporous; stainless steel; tomography
OSTI Identifier:
1416146
Alternate Identifier(s):
OSTI ID: 1434768

Zhao, Chonghang, Wada, Takeshi, De Andrade, Vincent, Williams, Garth J., Gelb, Jeff, Li, Li, Thieme, Juergen, Kato, Hidemi, and Chen-Wiegart, Yu-chen Karen. 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]. United States: N. p., Web. doi:10.1021/acsami.7b04659.
Zhao, Chonghang, Wada, Takeshi, De Andrade, Vincent, Williams, Garth J., Gelb, Jeff, Li, Li, Thieme, Juergen, Kato, Hidemi, & Chen-Wiegart, Yu-chen Karen. 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]. United States. doi:10.1021/acsami.7b04659.
Zhao, Chonghang, Wada, Takeshi, De Andrade, Vincent, Williams, Garth J., Gelb, Jeff, Li, Li, Thieme, Juergen, Kato, Hidemi, and Chen-Wiegart, Yu-chen Karen. 2017. "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]". United States. doi:10.1021/acsami.7b04659. https://www.osti.gov/servlets/purl/1416146.
@article{osti_1416146,
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]},
author = {Zhao, Chonghang and Wada, Takeshi and De Andrade, Vincent and Williams, Garth J. and Gelb, Jeff and Li, Li and Thieme, Juergen and Kato, Hidemi and Chen-Wiegart, Yu-chen Karen},
abstractNote = {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, bicontinuous structure with both open pores for transport and solid phase for conductivity or support, and low material cost. Here, we used X-ray nanotomography 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.},
doi = {10.1021/acsami.7b04659},
journal = {ACS Applied Materials and Interfaces},
number = 39,
volume = 9,
place = {United States},
year = {2017},
month = {9}
}