Corrosion Behavior of Electrodeposited ZnNi Alloy–CeO2 Modified SiO2 Particle Composite Coatings
| Autor: | Nguyen Van Khuong, Le Duc Bao, Nguyen Van Chien, Nguyen Thanh Huong, Le Ba Thang, Truong Thi Nam |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Composite number Alloy 02 engineering and technology engineering.material 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Corrosion Coating Plating engineering Particle Salt spray test Physical and Theoretical Chemistry Composite material 0210 nano-technology Polarization (electrochemistry) |
| Zdroj: | Russian Journal of Physical Chemistry A. 95:827-833 |
| ISSN: | 1531-863X 0036-0244 |
| DOI: | 10.1134/s0036024421040099 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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