期刊
METALS
卷 12, 期 10, 页码 -出版社
MDPI
DOI: 10.3390/met12101736
关键词
high-entropy alloys (HEA); electrochemical impedance spectroscopy (EIS); X-ray photoelectron spectroscopy (XPS); high-energy X-ray diffraction (HEXRD); passive film
资金
- Firestone Research [639430]
- University of Akron Fellowship [FRC-207160, FRC-207865]
- Spanish Ministry of Science and Innovation [PID2019-104382RBI00]
The corrosion performance of a new developed high-entropy alloy (HEA) was studied, and it was found to have good corrosion resistance under neutral and acidic pH conditions.
In this work, the corrosion performance of a new developed high-entropy alloy (HEA) of the composition Al10Cr30Fe25Mn30Ti5 (at. %) was studied. The corrosion testing of the Al10Cr30Fe25Mn30Ti5 HEA was carried out in 2.5 M NaOH, 0.6 M NaCl, and in 0.5 M H2SO4. The correlation between the microstructure, elemental composition, density, hardness, and corrosion resistance of the new developed Al10Cr30Fe25Mn30Ti5 HEA was investigated. The impedance response showed protective corrosion behavior for the neutral and acidic pH, while the alkaline environment led to a passivity breakdown due to dissolution of Al forming Al(OH)(3). The outcome of the presented study suggests that new developed HEA is suitable to be used in industrial environments with a neutral and acidic pH.
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