Study on Electrodeposition Preparation and Corrosion Resistance of Ni-Co-Ce Composite Coatings AITranslate
Abstract AITranslate
Ni-Co alloy coatings have good corrosion resistance and are mostly used for metal corrosion protection.The addition of Ce to the alloy coatings can refine the crystal grains and improve the microstructure densification and corrosion resistance of the alloy coatings.Using marine steel EH40 as the substrate,Ni-Co-Ce alloy coatings were prepared on its surface by composite electrodeposition process.The corrosion resistance of the alloy coatings prepared under different process conditions was tested through tests of potentiodynamic polarization curve and electrochemical impedance spectroscopy in a 3.5%NaCl solution.The surface morphology and phase composition of the coatings were investigated by scanning electron microscope and X-ray diffractometer.The results show that the optimal electrodeposition conditions of the coatings are a cerous sulfate concentration of 0.6 g/L,a current density of 0.04 A/cm2,and an electrodeposition temperature of 50℃.Under these conditions,the prepared coating possesses smooth surface,with the lowest self-corrosion current and self-corrosion potential(absolute value)of 3.6945×10-6A/cm2 and-0.534 V,respectively.In addition,the above coating exhibits the maximum charge transfer impedance of 889.81Ω·cm2,having the best corrosion resistance.
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Basic Information:
DOI：
Chinese Library Classification Number:TG174.44[金属学及工艺—金属表面处理]
Citation Information:
Ni-Co alloy coatings have good corrosion resistance and are mostly used for metal corrosion protection.The addition of Ce to the alloy coatings can refine the crystal grains and improve the microstructure densification and corrosion resistance of the alloy coatings.Using marine steel EH40 as the substrate,Ni-Co-Ce alloy coatings were prepared on its surface by composite electrodeposition process.The corrosion resistance of the alloy coatings prepared under different process conditions was tested through tests of potentiodynamic polarization curve and electrochemical impedance spectroscopy in a 3.5%NaCl solution.The surface morphology and phase composition of the coatings were investigated by scanning electron microscope and X-ray diffractometer.The results show that the optimal electrodeposition conditions of the coatings are a cerous sulfate concentration of 0.6 g/L,a current density of 0.04 A/cm2,and an electrodeposition temperature of 50℃.Under these conditions,the prepared coating possesses smooth surface,with the lowest self-corrosion current and self-corrosion potential(absolute value)of 3.6945×10-6A/cm2 and-0.534 V,respectively.In addition,the above coating exhibits the maximum charge transfer impedance of 889.81Ω·cm2,having the best corrosion resistance.
quote
| GB/T 7714-2015 | [1] HU Yue, LIANG Zhi-peng, LI Ji-dong, et al. Study on Electrodeposition Preparation and Corrosion Resistance of Ni-Co-Ce Composite Coatings[J]. Rare Metals and Cemented Carbides, 2024(2): 38-44. |
| MLA | [1] HU Yue, et al., "Study on Electrodeposition Preparation and Corrosion Resistance of Ni-Co-Ce Composite Coatings." Rare Metals and Cemented Carbides, no. 2, 2024, pp. 38-44. |
| APA | [1] HU Yue, LIANG Zhi-peng, LI Ji-dong, LU Jin-lin, CHEN Dong-xu, & JIN Sen-hu. (2024). Study on Electrodeposition Preparation and Corrosion Resistance of Ni-Co-Ce Composite Coatings. Rare Metals and Cemented Carbides(2), 38-44. |
| IEEE | [1] HU Yue, LIANG Zhi-peng, LI Ji-dong, LU Jin-lin, CHEN Dong-xu, and JIN Sen-hu, "Study on Electrodeposition Preparation and Corrosion Resistance of Ni-Co-Ce Composite Coatings," Rare Metals and Cemented Carbides, no. 2, pp. 38-44, 2024. keywords: {marine steel;Ni-Co-C ecoating;electrodeposition;electrochemical analysis;corrosion resistance} |