Kinetics and morphological evolution of liquid metal dealloying
Abstract
Liquid metal dealloying (LMD) has recently emerged as a novel technique to fabricate bulk nanostructures using a bottom-up self-organization method, but the literature lacks fundamental studies of this kinetic process. In this work, we conduct an in-depth study of the kinetics and fundamental microstructure evolution mechanisms during LMD using Tisingle bondTa alloys immersed in molten Cu as a model system. We develop a model of LMD kinetics based on a quantitative characterization of the effects of key parameters in our system including alloy composition, dealloying duration, and dealloying temperature. Further, this work demonstrates that the dealloying interface is at or near equilibrium during LMD, and that the rate-limiting step is the liquid-state diffusion of dissolving atoms away from the dealloying interface (diffusion-limited kinetics). The quantitative comparison between theoretically predicted and measured dealloying rates further reveals that convective transport and rejection of the dissolving element during coarsening of the structure also influence the dealloying kinetics.
- Authors:
-
[1]
- Johns Hopkins Univ., Baltimore, MD (United States)
- Northeastern Univ., Boston, MA (United States); Univ. of Lyon (France)
- Northeastern Univ., Boston, MA (United States)
- Publication Date:
- Research Org.:
- Northeastern Univ., Boston, MA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- OSTI Identifier:
- 1906131
- Alternate Identifier(s):
- OSTI ID: 1323582
- Grant/Contract Number:
- FG02-07ER46400; DMR-1402726; DMR-1003901
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Acta Materialia
- Additional Journal Information:
- Journal Volume: 115; Journal ID: ISSN 1359-6454
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; dealloying; kinetics; composites; diffusion; metals
Citation Formats
McCue, Ian, Gaskey, Bernard, Geslin, Pierre-Antoine, Karma, Alain, and Erlebacher, Jonah. Kinetics and morphological evolution of liquid metal dealloying. United States: N. p., 2016.
Web. doi:10.1016/j.actamat.2016.05.032.
McCue, Ian, Gaskey, Bernard, Geslin, Pierre-Antoine, Karma, Alain, & Erlebacher, Jonah. Kinetics and morphological evolution of liquid metal dealloying. United States. https://doi.org/10.1016/j.actamat.2016.05.032
McCue, Ian, Gaskey, Bernard, Geslin, Pierre-Antoine, Karma, Alain, and Erlebacher, Jonah. Tue .
"Kinetics and morphological evolution of liquid metal dealloying". United States. https://doi.org/10.1016/j.actamat.2016.05.032. https://www.osti.gov/servlets/purl/1906131.
@article{osti_1906131,
title = {Kinetics and morphological evolution of liquid metal dealloying},
author = {McCue, Ian and Gaskey, Bernard and Geslin, Pierre-Antoine and Karma, Alain and Erlebacher, Jonah},
abstractNote = {Liquid metal dealloying (LMD) has recently emerged as a novel technique to fabricate bulk nanostructures using a bottom-up self-organization method, but the literature lacks fundamental studies of this kinetic process. In this work, we conduct an in-depth study of the kinetics and fundamental microstructure evolution mechanisms during LMD using Tisingle bondTa alloys immersed in molten Cu as a model system. We develop a model of LMD kinetics based on a quantitative characterization of the effects of key parameters in our system including alloy composition, dealloying duration, and dealloying temperature. Further, this work demonstrates that the dealloying interface is at or near equilibrium during LMD, and that the rate-limiting step is the liquid-state diffusion of dissolving atoms away from the dealloying interface (diffusion-limited kinetics). The quantitative comparison between theoretically predicted and measured dealloying rates further reveals that convective transport and rejection of the dissolving element during coarsening of the structure also influence the dealloying kinetics.},
doi = {10.1016/j.actamat.2016.05.032},
journal = {Acta Materialia},
number = ,
volume = 115,
place = {United States},
year = {Tue May 31 00:00:00 EDT 2016},
month = {Tue May 31 00:00:00 EDT 2016}
}
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Works referencing / citing this record:
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