Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steel
This study explores the electrodeposition of Ni-Co alloy and Ni-Co-CeO2 composite coatings on mild steel to enhance its corrosion resistance. The investigation focuses on the influence of varying current densities on key properties such as surface morphology, crystallite size, roughness, and composi...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-12-01
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| Series: | Arab Journal of Basic and Applied Sciences |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/25765299.2025.2481674 |
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| author | Jai Navani Meghana K. Navada Ganesha Aroor Preethi P. Kumari Akshatha R. Shetty |
| author_facet | Jai Navani Meghana K. Navada Ganesha Aroor Preethi P. Kumari Akshatha R. Shetty |
| author_sort | Jai Navani |
| collection | DOAJ |
| description | This study explores the electrodeposition of Ni-Co alloy and Ni-Co-CeO2 composite coatings on mild steel to enhance its corrosion resistance. The investigation focuses on the influence of varying current densities on key properties such as surface morphology, crystallite size, roughness, and composition. All the deposited coatings exhibited uniform and crack-free surfaces, with distinct structural and morphological features that varied depending on the applied current density. The Ni-Co alloy coatings demonstrated a noticeable improvement in corrosion resistance, which was attributed to the increased nickel content in the alloy. The Ni-Co-CeO2 system exhibited superior performance among the composite coatings, with the best corrosion resistance observed at a current density of 3 A dm−2. The composite achieved a remarkably low corrosion rate of 0.075 × 10−2 mm y−1 at this optimal condition. Conversely, the highest corrosion rate was recorded at a lower current density of 1 A dm−2. Adding CeO2 nanoparticles to the Ni-Co matrix significantly enhanced the coatings protective properties, highlighting the composite structure’s synergistic effect in resisting corrosive environments. |
| format | Article |
| id | doaj-art-29d1d5efab124b52bd31204286f8a666 |
| institution | OA Journals |
| issn | 2576-5299 |
| language | English |
| publishDate | 2025-12-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Arab Journal of Basic and Applied Sciences |
| spelling | doaj-art-29d1d5efab124b52bd31204286f8a6662025-08-20T01:48:38ZengTaylor & Francis GroupArab Journal of Basic and Applied Sciences2576-52992025-12-01321819310.1080/25765299.2025.2481674Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steelJai Navani0Meghana K. Navada1Ganesha Aroor2Preethi P. Kumari3Akshatha R. Shetty4Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education (MAHE), Manipal, IndiaDepartment of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education (MAHE), Manipal, IndiaDepartment of Mechanical and Industrial Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education (MAHE), Manipal, IndiaDepartment of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education (MAHE), Manipal, IndiaDepartment of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education (MAHE), Manipal, IndiaThis study explores the electrodeposition of Ni-Co alloy and Ni-Co-CeO2 composite coatings on mild steel to enhance its corrosion resistance. The investigation focuses on the influence of varying current densities on key properties such as surface morphology, crystallite size, roughness, and composition. All the deposited coatings exhibited uniform and crack-free surfaces, with distinct structural and morphological features that varied depending on the applied current density. The Ni-Co alloy coatings demonstrated a noticeable improvement in corrosion resistance, which was attributed to the increased nickel content in the alloy. The Ni-Co-CeO2 system exhibited superior performance among the composite coatings, with the best corrosion resistance observed at a current density of 3 A dm−2. The composite achieved a remarkably low corrosion rate of 0.075 × 10−2 mm y−1 at this optimal condition. Conversely, the highest corrosion rate was recorded at a lower current density of 1 A dm−2. Adding CeO2 nanoparticles to the Ni-Co matrix significantly enhanced the coatings protective properties, highlighting the composite structure’s synergistic effect in resisting corrosive environments.https://www.tandfonline.com/doi/10.1080/25765299.2025.2481674CompositescoatingcorrosionmildsteelNi-Co alloyNi-Co-CeO2 |
| spellingShingle | Jai Navani Meghana K. Navada Ganesha Aroor Preethi P. Kumari Akshatha R. Shetty Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steel Arab Journal of Basic and Applied Sciences Composites coating corrosion mildsteel Ni-Co alloy Ni-Co-CeO2 |
| title | Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steel |
| title_full | Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steel |
| title_fullStr | Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steel |
| title_full_unstemmed | Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steel |
| title_short | Current density effect on CeO2-embedded Ni-Co alloy coatings for improved corrosion resistance of mild steel |
| title_sort | current density effect on ceo2 embedded ni co alloy coatings for improved corrosion resistance of mild steel |
| topic | Composites coating corrosion mildsteel Ni-Co alloy Ni-Co-CeO2 |
| url | https://www.tandfonline.com/doi/10.1080/25765299.2025.2481674 |
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