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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...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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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. |
format | Online Article Text |
id | pubmed-9078667 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
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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