10.1021/acsami.7b04659.s001
Chonghang Zhao
Chonghang
Zhao
Takeshi Wada
Takeshi
Wada
Vincent De Andrade
Vincent De
Andrade
Garth J. Williams
Garth
J. Williams
Jeff Gelb
Jeff
Gelb
Li Li
Li
Li
Juergen Thieme
Juergen
Thieme
Hidemi Kato
Hidemi
Kato
Yu-chen Karen Chen-Wiegart
Yu-chen Karen
Chen-Wiegart
Three-Dimensional
Morphological and Chemical Evolution of Nanoporous Stainless Steel
by Liquid Metal Dealloying
American Chemical Society
2017
metal dealloying processes
surface area
pore size
Chemical Evolution
3 D parameters
Nanoporous Stainless Steel
dealloying front
3 D morphology
X-ray nanotomography
densification mechanisms
X-ray fluorescence microscopy
Liquid Metal Dealloying Nanoporous materials
metal dealloying
dealloying methods
material cost
bicontinuous structure
Three-Dimensional Morphological
2017-09-04 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Three-Dimensional_Morphological_and_Chemical_Evolution_of_Nanoporous_Stainless_Steel_by_Liquid_Metal_Dealloying/5418934
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. 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.