EIS Study of Doped High-Entropy Alloy
The promising results obtained in the research of high-entropy alloys are increasingly encouraging new configurations of these alloys. Our research was conducted on the high-entropy CoCrFeMoNi alloy and the Ti-doped CoCrFeMoNi alloy. Electrochemical impedance spectroscopy (EIS) measurements were per...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/5/883 |
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| author | Santiago Jose Brito-Garcia Julia Claudia Mirza-Rosca Cristina Jimenez-Marcos Ionelia Voiculescu |
| author_facet | Santiago Jose Brito-Garcia Julia Claudia Mirza-Rosca Cristina Jimenez-Marcos Ionelia Voiculescu |
| author_sort | Santiago Jose Brito-Garcia |
| collection | DOAJ |
| description | The promising results obtained in the research of high-entropy alloys are increasingly encouraging new configurations of these alloys. Our research was conducted on the high-entropy CoCrFeMoNi alloy and the Ti-doped CoCrFeMoNi alloy. Electrochemical impedance spectroscopy (EIS) measurements were performed on samples with and without Ti-doped CoCrFeMoNi high-entropy alloys in order to evaluate the influence of voltage on their behavior in a simulated aggressive environment. The impedance spectra were measured between −1.0 and +0.8 V vs. SCE at various potential levels. Using an electrical equivalent circuit to match the experimental data, the impedance spectra were analyzed. The corresponding circuit that successfully fits the spectra has two time constants: the first one is for the attributes of the compact passive layer and the second one is for the features of the porous passive layer. The results show that doping CoCrFeMoNi alloy with 0.36 at.% Ti reduces the alloy’s ability to resist corrosion, as the alloy can react more quickly to the surrounding environment and cause a decrease in the corrosion resistance of the alloy. |
| first_indexed | 2024-03-11T03:30:01Z |
| format | Article |
| id | doaj.art-14a9444d507641ce9d117454cef72125 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T03:30:01Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-14a9444d507641ce9d117454cef721252023-11-18T02:27:12ZengMDPI AGMetals2075-47012023-05-0113588310.3390/met13050883EIS Study of Doped High-Entropy AlloySantiago Jose Brito-Garcia0Julia Claudia Mirza-Rosca1Cristina Jimenez-Marcos2Ionelia Voiculescu3Mechanical Engineering Department, University of Las Palmas de Gran Canaria, 3500 Las Palmas de Gran Canaria, SpainMechanical Engineering Department, University of Las Palmas de Gran Canaria, 3500 Las Palmas de Gran Canaria, SpainMechanical Engineering Department, University of Las Palmas de Gran Canaria, 3500 Las Palmas de Gran Canaria, SpainFaculty of Industrial Engineering and Robotics, Politehnica University of Bucharest, 060042 Bucharest, RomaniaThe promising results obtained in the research of high-entropy alloys are increasingly encouraging new configurations of these alloys. Our research was conducted on the high-entropy CoCrFeMoNi alloy and the Ti-doped CoCrFeMoNi alloy. Electrochemical impedance spectroscopy (EIS) measurements were performed on samples with and without Ti-doped CoCrFeMoNi high-entropy alloys in order to evaluate the influence of voltage on their behavior in a simulated aggressive environment. The impedance spectra were measured between −1.0 and +0.8 V vs. SCE at various potential levels. Using an electrical equivalent circuit to match the experimental data, the impedance spectra were analyzed. The corresponding circuit that successfully fits the spectra has two time constants: the first one is for the attributes of the compact passive layer and the second one is for the features of the porous passive layer. The results show that doping CoCrFeMoNi alloy with 0.36 at.% Ti reduces the alloy’s ability to resist corrosion, as the alloy can react more quickly to the surrounding environment and cause a decrease in the corrosion resistance of the alloy.https://www.mdpi.com/2075-4701/13/5/883high-entropy alloysTi dopingEISequivalent circuitcorrosion resistance |
| spellingShingle | Santiago Jose Brito-Garcia Julia Claudia Mirza-Rosca Cristina Jimenez-Marcos Ionelia Voiculescu EIS Study of Doped High-Entropy Alloy Metals high-entropy alloys Ti doping EIS equivalent circuit corrosion resistance |
| title | EIS Study of Doped High-Entropy Alloy |
| title_full | EIS Study of Doped High-Entropy Alloy |
| title_fullStr | EIS Study of Doped High-Entropy Alloy |
| title_full_unstemmed | EIS Study of Doped High-Entropy Alloy |
| title_short | EIS Study of Doped High-Entropy Alloy |
| title_sort | eis study of doped high entropy alloy |
| topic | high-entropy alloys Ti doping EIS equivalent circuit corrosion resistance |
| url | https://www.mdpi.com/2075-4701/13/5/883 |
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