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Corrosion Behavior of Electrodeposited ZnNi Alloy–CeO2 Modified SiO2 Particle Composite Coatings

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Abstract

In this research, CeO2 modified SiO2 powder was prepared for electrodepositing ZnNi alloy–CeO2 modified SiO2 particle composite coatings. Corrosion behavior of the ZnNi/(SiO2)CeO2 composite coatings was studied by the potentiodynamic polarization method and neutral salt spray test. The results show that the composite coating obtained at the plating current density of 3 A/dm2 in 20 min has the chemical composition with the nickel content of 14.90 wt %, which is composed only of the gamma phase. This composite coating has the brightest surface and the best corrosion resistance. The coating has the largest polarization resistance of 2430.48 Ω cm2 from polarization curve and the time for appearing the first red rust spot on the surface of this coating is the longest, lasting 1008 h.

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ACKNOWLEDGMENTS

This work was financial supported by the Vietnam Academy of Science and Technology (VAST03.02/19-20).

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Authors and Affiliations

  1. Institute for Tropical Technology, Vietnam Academy of Science and Technology, 18, Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam

    Nguyen Thi Thanh Huong, Le Duc Bao, Le Ba Thang, Nguyen Van Chien, Truong Thi Nam & Nguyen Van Khuong

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  1. Nguyen Thi Thanh Huong
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  2. Le Duc Bao
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  3. Le Ba Thang
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  4. Nguyen Van Chien
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  5. Truong Thi Nam
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  6. Nguyen Van Khuong
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Correspondence to Nguyen Thi Thanh Huong.

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Huong, N., Bao, L.D., Thang, L.B. et al. Corrosion Behavior of Electrodeposited ZnNi Alloy–CeO2 Modified SiO2 Particle Composite Coatings. Russ. J. Phys. Chem. 95, 827–833 (2021). https://doi.org/10.1134/S0036024421040099

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  • DOI: https://doi.org/10.1134/S0036024421040099

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