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Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy

Nanoporous silver (NPS) was fabricated by dealloying Ag–Al alloy ribbons with nominal compositions of 30, 35 and 40 at% Ag (corresponding to hypoeutectic composition, eutectic composition and hypereutectic composition, respectively). The microstructures of the Ag–Al precursor and as-dealloyed sample...

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Detalles Bibliográficos
Autores principales: Zhang, Runwei, Wang, Xu, Zhang, Zhichao, Huang, Jacob C., Shi, Feng, Wu, Ming
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078667/
https://www.ncbi.nlm.nih.gov/pubmed/35541846
http://dx.doi.org/10.1039/c7ra12915g
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author Zhang, Runwei
Wang, Xu
Zhang, Zhichao
Huang, Jacob C.
Shi, Feng
Wu, Ming
author_facet Zhang, Runwei
Wang, Xu
Zhang, Zhichao
Huang, Jacob C.
Shi, Feng
Wu, Ming
author_sort Zhang, Runwei
collection PubMed
description Nanoporous silver (NPS) was fabricated by dealloying Ag–Al alloy ribbons with nominal compositions of 30, 35 and 40 at% Ag (corresponding to hypoeutectic composition, eutectic composition and hypereutectic composition, respectively). The microstructures of the Ag–Al precursor and as-dealloyed samples were observed using a scanning electron microscope (SEM) and a transmission electron microscope (TEM) as well as via focused ion beam (FIB) technique. We concluded that with the increase in Ag content from 30 to 40 at%, the diameter of ligament increased from 70 ± 15 nm to 115 ± 35 nm. Due to the method of crystalline solidification and the distribution of α-Al(Ag) and γ-Ag(2)Al phases, the as-dealloyed Ag(35)Al(65) alloy exhibited a homogeneous ligament/pore structure, whereas the microstructures of Ag(30)Al(70) and Ag(40)Al(60) showed thinner and coarser ligament structures, respectively.
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spelling pubmed-90786672022-05-09 Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy Zhang, Runwei Wang, Xu Zhang, Zhichao Huang, Jacob C. Shi, Feng Wu, Ming RSC Adv Chemistry Nanoporous silver (NPS) was fabricated by dealloying Ag–Al alloy ribbons with nominal compositions of 30, 35 and 40 at% Ag (corresponding to hypoeutectic composition, eutectic composition and hypereutectic composition, respectively). The microstructures of the Ag–Al precursor and as-dealloyed samples were observed using a scanning electron microscope (SEM) and a transmission electron microscope (TEM) as well as via focused ion beam (FIB) technique. We concluded that with the increase in Ag content from 30 to 40 at%, the diameter of ligament increased from 70 ± 15 nm to 115 ± 35 nm. Due to the method of crystalline solidification and the distribution of α-Al(Ag) and γ-Ag(2)Al phases, the as-dealloyed Ag(35)Al(65) alloy exhibited a homogeneous ligament/pore structure, whereas the microstructures of Ag(30)Al(70) and Ag(40)Al(60) showed thinner and coarser ligament structures, respectively. The Royal Society of Chemistry 2018-03-05 /pmc/articles/PMC9078667/ /pubmed/35541846 http://dx.doi.org/10.1039/c7ra12915g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by/3.0/
spellingShingle Chemistry
Zhang, Runwei
Wang, Xu
Zhang, Zhichao
Huang, Jacob C.
Shi, Feng
Wu, Ming
Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy
title Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy
title_full Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy
title_fullStr Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy
title_full_unstemmed Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy
title_short Structure analysis of precursor alloy and diffusion during dealloying of Ag–Al alloy
title_sort structure analysis of precursor alloy and diffusion during dealloying of ag–al alloy
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078667/
https://www.ncbi.nlm.nih.gov/pubmed/35541846
http://dx.doi.org/10.1039/c7ra12915g
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