Nanoporous High-Entropy Alloy by Liquid Metal Dealloying
SCIE
SCOPUS
- Title
- Nanoporous High-Entropy Alloy by Liquid Metal Dealloying
- Authors
- Okulov, Artem Vladimirovich; Joo, Soo-Hyun; KIM, HYOUNG SEOP; Kato, Hidemi; Okulov, Ilya Vladimirovich
- Date Issued
- 2020-10
- Publisher
- Multidisciplinary Digital Publishing Institute (MDPI)
- Abstract
- High-entropy nanomaterials possessing high accessible surface areas have demonstrated outstanding catalytic performance, beating that found for noble metals. In this communication, we report about the synthesis of a new, nanoporous, high-entropy alloy (HEA) possessing open porosity. The nanoporous, high-entropy Ta19.1Mo20.5Nb22.9V30Ni7.5 alloy (at%) was fabricated from a precursor (TaMoNbV)25Ni75 alloy (at%) by liquid metal dealloying using liquid magnesium (Mg). Directly after dealloying, the bicontinuous nanocomposite consisting of a Mg-rich phase and a phase with a bulk-centered cubic (bcc) structure was formed. The Mg-rich phase was removed with a 3M aqueous solution of nitric acid to obtain the open, porous, high-entropy Ta19.1Mo20.5Nb22.9V30Ni7.5 alloy (at%). The ligament size of this nanoporous HEA is about 69 ± 9 nm, indicating the high surface area in this material.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/105536
- DOI
- 10.3390/met10101396
- ISSN
- 2075-4701
- Article Type
- Article
- Citation
- METALS, vol. 10, no. 10, 2020-10
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- There are no files associated with this item.
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