Corrosion behavior of AlCuFeMn alloy in aqueous sodium chloride solution
- Title
- Corrosion behavior of AlCuFeMn alloy in aqueous sodium chloride solution
- Creator
- Dutta A.; Sivaji T.; Ghosh M.; Fernandes R.; De P.S.; Nayak D.; Sharma R.
- Description
- Medium Entropy Alloy AlCuFeMn possesses high room temperature strength and oxidation endurance. In present work, the aqueous corrosion resistance of the as-cast as well as low temperature oxidized AlCuFeMn alloy in 3.5 wt% NaCl solution, is explored. Equimolar proportions of high purity copper, manganese, iron, and aluminum were arc melted and cast in a copper mold. The alloy primarily consists of a face-centered cubic and a body-centered cubic phase. Potentiodynamic polarization tests on the alloy after low temperature surface oxidation reveal an aqueous corrosion resistance comparable to AISI 304 steel and CoCrFeMnNi high entropy alloy. The X-ray photoelectron spectroscopic studies confirmed that the free surface in the as-cast alloy is in partially oxidized state. The same completely oxidizes after low-temperature surface oxidation. Such low temperature surface oxidation improves pitting corrosion resistance in AlCuFeMn alloy due to increased metal/oxide layer resistance. The electrochemical impedance spectroscopy tests coupled with microscopy confirmed that the principal corrosion mechanisms in the alloy are of the uniform and pitting type. The energy dispersive spectroscopy experiments indicate that a copper oxide enriched layer is formed on the surface oxidized specimen during corrosion. 2021 Elsevier B.V.
- Source
- Materials Chemistry and Physics, Vol-276
- Date
- 2022-01-01
- Publisher
- Elsevier Ltd
- Subject
- EIS; Medium entropy alloy; Pitting corrosion; XPS
- Coverage
- Dutta A., School of Minerals, Metallurgical and Materials Engineering, Indian Institute of Technology Bhubaneswar, India; Sivaji T., School of Minerals, Metallurgical and Materials Engineering, Indian Institute of Technology Bhubaneswar, India; Ghosh M., Materials Engineering Division, CSIR-National Metallurgical Laboratory, Jamshedpur, India; Fernandes R., Department of Physics and Electronics, Christ University, Bangalore, India; De P.S., School of Minerals, Metallurgical and Materials Engineering, Indian Institute of Technology Bhubaneswar, India; Nayak D., School of Minerals, Metallurgical and Materials Engineering, Indian Institute of Technology Bhubaneswar, India, CSIR-Institute of Minerals & Materials Technology, Bhubaneswar, India; Sharma R., School of Minerals, Metallurgical and Materials Engineering, Indian Institute of Technology Bhubaneswar, India
- Rights
- Restricted Access
- Relation
- ISSN: 2540584; CODEN: MCHPD
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Dutta A.; Sivaji T.; Ghosh M.; Fernandes R.; De P.S.; Nayak D.; Sharma R., “Corrosion behavior of AlCuFeMn alloy in aqueous sodium chloride solution,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 27, 2025, https://archives.christuniversity.in/items/show/15178.