Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powder
The difficulty of producing high-entropy alloy (HEA) powders is one of the key issues that limits the application of HEAs in a range of fields, including energy devices, additive manufacturing and spraying techniques. In the present work, nano-size equiatomic CoCrFeNi HEA powder has been prepared fr...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-10-01
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| Series: | Electrochemistry Communications |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248122001941 |
| _version_ | 1828093163870355456 |
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| author | Jagadeesh Sure D. Sri Maha Vishnu Carsten Schwandt |
| author_facet | Jagadeesh Sure D. Sri Maha Vishnu Carsten Schwandt |
| author_sort | Jagadeesh Sure |
| collection | DOAJ |
| description | The difficulty of producing high-entropy alloy (HEA) powders is one of the key issues that limits the application of HEAs in a range of fields, including energy devices, additive manufacturing and spraying techniques. In the present work, nano-size equiatomic CoCrFeNi HEA powder has been prepared from micro-size mixed metal-oxide precursors by electro-deoxidation in molten CaCl2-NaCl at 923 K. The HEA powder obtained had a single-phase face-centered cubic structure with a lattice constant of 3.571 Å, and was of a powdery morphology with spherical particles in the size range of 40–200 nm. The composition achieved was close to the nominal one and no contamination was detected. Altogether, this study has demonstrated that, with suitably adjusted process parameters, electro-deoxidation is an effective method of producing nano-size HEA powders. |
| first_indexed | 2024-04-11T06:40:25Z |
| format | Article |
| id | doaj.art-62647f272c324d4aafd70b7b722afcd4 |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-04-11T06:40:25Z |
| publishDate | 2022-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-62647f272c324d4aafd70b7b722afcd42022-12-22T04:39:33ZengElsevierElectrochemistry Communications1388-24812022-10-01143107392Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powderJagadeesh Sure0D. Sri Maha Vishnu1Carsten Schwandt2Department of Physics, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu 632014, India; Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom; Corresponding author at: Department of Physics, School of Advanced Sciences, Vellore Institute of Technology (VIT), Vellore, Tamil Nadu 632014, India.Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom; Department of Biological Sciences and Chemistry, University of Nizwa, Birkat Al Mouz, 616 Nizwa, Oman; Natural and Medical Sciences Research Center, University of Nizwa, Birkat Al Mouz, 616 Nizwa, OmanDepartment of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United KingdomThe difficulty of producing high-entropy alloy (HEA) powders is one of the key issues that limits the application of HEAs in a range of fields, including energy devices, additive manufacturing and spraying techniques. In the present work, nano-size equiatomic CoCrFeNi HEA powder has been prepared from micro-size mixed metal-oxide precursors by electro-deoxidation in molten CaCl2-NaCl at 923 K. The HEA powder obtained had a single-phase face-centered cubic structure with a lattice constant of 3.571 Å, and was of a powdery morphology with spherical particles in the size range of 40–200 nm. The composition achieved was close to the nominal one and no contamination was detected. Altogether, this study has demonstrated that, with suitably adjusted process parameters, electro-deoxidation is an effective method of producing nano-size HEA powders.http://www.sciencedirect.com/science/article/pii/S1388248122001941High-entropy alloyCoCrFeNiX-ray powder diffractometryElectron microscopyMicrostructureNano-powder |
| spellingShingle | Jagadeesh Sure D. Sri Maha Vishnu Carsten Schwandt Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powder Electrochemistry Communications High-entropy alloy CoCrFeNi X-ray powder diffractometry Electron microscopy Microstructure Nano-powder |
| title | Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powder |
| title_full | Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powder |
| title_fullStr | Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powder |
| title_full_unstemmed | Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powder |
| title_short | Single-step electrochemical synthesis of nano-crystalline CoCrFeNi high-entropy alloy powder |
| title_sort | single step electrochemical synthesis of nano crystalline cocrfeni high entropy alloy powder |
| topic | High-entropy alloy CoCrFeNi X-ray powder diffractometry Electron microscopy Microstructure Nano-powder |
| url | http://www.sciencedirect.com/science/article/pii/S1388248122001941 |
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