Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminum
A new category of Al-doped cobalt-based dual phase entropic alloys with high corrosion resistance properties was designed in the present work. CALPHAD (CALculation of PHAse Diagram) aided prediction was performed to facilitate the alloy design. Two groups of alloys have been extensively investigated...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423011006 |
| _version_ | 1797798715261452288 |
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| author | Wei Wang Hongliu Wu Wangzhong Mu Wenda Zhang Zhou Li Huahai Mao Peikang Bai Henrik Larsson |
| author_facet | Wei Wang Hongliu Wu Wangzhong Mu Wenda Zhang Zhou Li Huahai Mao Peikang Bai Henrik Larsson |
| author_sort | Wei Wang |
| collection | DOAJ |
| description | A new category of Al-doped cobalt-based dual phase entropic alloys with high corrosion resistance properties was designed in the present work. CALPHAD (CALculation of PHAse Diagram) aided prediction was performed to facilitate the alloy design. Two groups of alloys have been extensively investigated by various techniques. One group was quenched in water from the homogenization temperature (i.e. 1200 °C) to room temperature. The other group was subsequently quenched in liquid nitrogen from room temperature. The microstructure of the proposed alloys was characterized by X-ray diffraction (XRD). Several kinds of electrochemical tests were performed to study the corrosion behaviors of the designed alloys in NaCl solution, including open circuit potential (OCP), polarization and cyclic polarization curves, electrochemical impedance spectroscopy (EIS), electrochemical noise (ECN), linear voltammetry curves and staircase voltammetry scan, and Mott–Schottky method. The obtained results show that Al has a minor influence on the corrosion property of this series alloy with a 0 to 2 at.% Al addition. All the designed alloys hold quite acceptable corrosion resistance. In addition, a mechanical property, i.e. micro-hardness, is also provided as a supplement information. This work sheds light on the correlation between computational thermodynamics and corrosion behaviors in cobalt-based dual-phase entropic alloys, as well as to provide a feasibility study on the important role of CALPHAD method for a rapid development of a new category of high performance alloys. |
| first_indexed | 2024-03-13T04:08:00Z |
| format | Article |
| id | doaj.art-0f6fc8ebfb504616b1a9936ca4561422 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-13T04:08:00Z |
| publishDate | 2023-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-0f6fc8ebfb504616b1a9936ca45614222023-06-21T06:57:52ZengElsevierJournal of Materials Research and Technology2238-78542023-05-012492259239Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminumWei Wang0Hongliu Wu1Wangzhong Mu2Wenda Zhang3Zhou Li4Huahai Mao5Peikang Bai6Henrik Larsson7Department of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, China; Corresponding author. Department of Chemical Engineering, Northeast Electric Power University, China.Department of Chemical Engineering, Northeast Electric Power University, Jilin, 132012, ChinaKey Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang, 110819, China; Department of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden; Corresponding author. Department of Materials Science and Engineering, KTH Royal Institute of Technology, Sweden.School of Materials Science and Engineering, North University of China, 030051, Taiyuan, ChinaCollege of Artificial Intelligence and Big Data for Medical Science, Shandong First Medical University & Shandong Academy of Medical Sciences, Jinan, 250117, ChinaDepartment of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden; Thermo-Calc Software, Råsundavägen 18, SE-16767, Solna, SwedenSchool of Materials Science and Engineering, North University of China, 030051, Taiyuan, China; Corresponding author. School of Materials Science and Engineering, North University of China, ChinaDepartment of Materials Science and Engineering, KTH Royal Institute of Technology, SE-100 44, Stockholm, Sweden; Thermo-Calc Software, Råsundavägen 18, SE-16767, Solna, Sweden; Corresponding author.A new category of Al-doped cobalt-based dual phase entropic alloys with high corrosion resistance properties was designed in the present work. CALPHAD (CALculation of PHAse Diagram) aided prediction was performed to facilitate the alloy design. Two groups of alloys have been extensively investigated by various techniques. One group was quenched in water from the homogenization temperature (i.e. 1200 °C) to room temperature. The other group was subsequently quenched in liquid nitrogen from room temperature. The microstructure of the proposed alloys was characterized by X-ray diffraction (XRD). Several kinds of electrochemical tests were performed to study the corrosion behaviors of the designed alloys in NaCl solution, including open circuit potential (OCP), polarization and cyclic polarization curves, electrochemical impedance spectroscopy (EIS), electrochemical noise (ECN), linear voltammetry curves and staircase voltammetry scan, and Mott–Schottky method. The obtained results show that Al has a minor influence on the corrosion property of this series alloy with a 0 to 2 at.% Al addition. All the designed alloys hold quite acceptable corrosion resistance. In addition, a mechanical property, i.e. micro-hardness, is also provided as a supplement information. This work sheds light on the correlation between computational thermodynamics and corrosion behaviors in cobalt-based dual-phase entropic alloys, as well as to provide a feasibility study on the important role of CALPHAD method for a rapid development of a new category of high performance alloys.http://www.sciencedirect.com/science/article/pii/S2238785423011006Al-doped cobalt-based entropic alloysElectrochemical corrosion behaviorThermodynamic calculationsMicro-hardnessMaterials design |
| spellingShingle | Wei Wang Hongliu Wu Wangzhong Mu Wenda Zhang Zhou Li Huahai Mao Peikang Bai Henrik Larsson Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminum Journal of Materials Research and Technology Al-doped cobalt-based entropic alloys Electrochemical corrosion behavior Thermodynamic calculations Micro-hardness Materials design |
| title | Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminum |
| title_full | Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminum |
| title_fullStr | Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminum |
| title_full_unstemmed | Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminum |
| title_short | Optimal corrosion resistance of cobalt-based dual-phase entropic alloys via compositional modulation of aluminum |
| title_sort | optimal corrosion resistance of cobalt based dual phase entropic alloys via compositional modulation of aluminum |
| topic | Al-doped cobalt-based entropic alloys Electrochemical corrosion behavior Thermodynamic calculations Micro-hardness Materials design |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423011006 |
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