High-entropy alloys (HEAs) have attracted increasing attention owing to their multicomponent characteristics with notable high-entropy effects. However, obtaining HEAs with improved properties is still challenging. The properties of HEAs can be modulated by the fabrication technique. Electrodeposition could achieve the desired performance characteristics of HEA coatings while operating at reduced processing temperatures and energy consumption levels. Herein, novel FeCoNiCr HEA coatings were electrodeposited on copper substrates under various current densities. The microstructure, coating thickness, hardness, wear resistance, and corrosion properties of the FeCoNiCr HEA coatings prepared at different current densities were all examined. X-ray diffraction revealed HEA coatings with a single disordered face-centered cubic solid solution phase. Scanning electron microscopy indicated uniform and dense surfaces of FeCoNiCr HEA coatings fabricated under a current density of 25 A/dm2, with significantly reduced coating cracking and improved structural integrity. The coatings prepared at 25 A/dm2 also exhibited maximum thickness and favorable bonding with the substrate, as well as notably enhanced wear resistance. As the preparation current density increases, the hardness of the coating increases. The hardness of the coating reaches its maximum at 30 A/dm2. FeCoNiCr HEA coatings fabricated under a current density of 25 A/dm2 in a 3.5 wt% NaCl solution simulated seawater conditions demonstrated improved electrochemical resistance to corrosion. By comparing the microstructure, elemental content, and properties of coatings prepared at various current densities, it was found that the FeCoNiCr HEA coating prepared at 25 A/dm2 showed the best performance.
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1 April 2024
Research Article|
February 02 2024
Microstructures and Properties of FeCoNiCr High-Entropy Alloy Coatings Prepared by Electrodeposition
Xiang Ju;
Xiang Ju
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
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Chuanbo Zheng;
Chuanbo Zheng
‡
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
‡Corresponding author. E-mail: [email protected].
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Tianyi Lv;
Tianyi Lv
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
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Hongbo Ju;
Hongbo Ju
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
***University of Coimbra, CEMMPRE, ARISE, Department of Mechanical Engineering, Rua Luís Reis Santos, 3030-788 Coimbra, Portugal.
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Han Ma;
Han Ma
**Shagang Iron and Steel Research Institute Co. Ltd. Zhangjiagang 215625, Jiangsu China.
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Dianchun Ju;
Dianchun Ju
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
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Jiming Zhang;
Jiming Zhang
**Shagang Iron and Steel Research Institute Co. Ltd. Zhangjiagang 215625, Jiangsu China.
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Kaifei Gong;
Kaifei Gong
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
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Bowen Li;
Bowen Li
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
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Xiaotian Wang;
Xiaotian Wang
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
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Wenkai Zou
Wenkai Zou
*School of Metallurgy and Materials Engineering, Jiangsu University of Science and Technology, Zhangjiagang 215600, Jiangsu, China Jiangsu.
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CORROSION (2024) 80 (4): 406–416.
Citation
Xiang Ju, Chuanbo Zheng, Tianyi Lv, Hongbo Ju, Han Ma, Dianchun Ju, Jiming Zhang, Kaifei Gong, Bowen Li, Xiaotian Wang, Wenkai Zou; Microstructures and Properties of FeCoNiCr High-Entropy Alloy Coatings Prepared by Electrodeposition. CORROSION 1 April 2024; 80 (4): 406–416. doi: https://doi.org/10.5006/4493
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