Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coating
The present work proposes the study of a composite zinc coating obtained through electrodeposition containing nanoparticles of a natural polymer of cotton nanocrystals. In this work, the effect of the addition of cotton nanocrystals on the morphology, structure, corrosion resistance, and hardness of...
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| Format: | Article |
| Language: | English |
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Elsevier
2022-03-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422000163 |
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| author | Carolina da S. Lopes Isabel C. Rigoli Carlos A.D. Rovere Claudia L.F. da Rocha Carlos A.C. de Souza |
| author_facet | Carolina da S. Lopes Isabel C. Rigoli Carlos A.D. Rovere Claudia L.F. da Rocha Carlos A.C. de Souza |
| author_sort | Carolina da S. Lopes |
| collection | DOAJ |
| description | The present work proposes the study of a composite zinc coating obtained through electrodeposition containing nanoparticles of a natural polymer of cotton nanocrystals. In this work, the effect of the addition of cotton nanocrystals on the morphology, structure, corrosion resistance, and hardness of the zinc coating is investigated. The effect of adding these particles on deposition efficiency is also investigated using scanning electron microscope (SEM), X-ray diffraction, roughness and Vicker microhardness measurements, mass loss tests, obtaining potentiodynamic polarization curves, and electrochemical impedance spectroscopy (EIS). Current density efficiency measures were also taken. It was found that the addition of the cotton nanocrystal in the deposition bath lead to the production of a coating with finer morphology and with less roughness compared to Zn coating obtained in the absence of the nanocrystal. However, it was found that the addition of cotton nanocrystal decreased the hardness of the coating. The results show that the addition of cotton nanocrystal increases the current efficiency and corrosion resistance of zinc coating in 0.5 mol/L NaCl solution, and this effect is more significant with the increase in the content of the nanocrystals. With the addition of 10% v/v of cotton nanocrystal the polarization resistance of the coating was improved up to 5-fold while its corrosion rate was reduced by up to 6-fold compared to the zinc coating without nanocrystals. |
| first_indexed | 2024-12-13T09:42:33Z |
| format | Article |
| id | doaj.art-0d8e11188e7e4cde90aadc08159d517d |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-12-13T09:42:33Z |
| publishDate | 2022-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-0d8e11188e7e4cde90aadc08159d517d2022-12-21T23:52:10ZengElsevierJournal of Materials Research and Technology2238-78542022-03-0117852864Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coatingCarolina da S. Lopes0Isabel C. Rigoli1Carlos A.D. Rovere2Claudia L.F. da Rocha3Carlos A.C. de Souza4Departamento de Engenharia Química, Universidade Federal da Bahia, Rua Aristides Novis, 02, Federação, Salvador, Bahia, Brazil; Corresponding author.Departamento de Físico-Química, Instituto de Química, Universidade Federal da Bahia, Rua Barão de Jeremoabo, 147, Ondina, Salvador, Bahia, BrazilDepartamento de Engenharia de Materiais, Universidade Federal de São Carlos, Rod. Washington Luiz, Km 235 Jardim Guanabara, São Carlos, São Paulo, BrazilDepartamento de Engenharia Química, Universidade Federal da Bahia, Rua Aristides Novis, 02, Federação, Salvador, Bahia, BrazilDepartamento de Engenharia Química, Universidade Federal da Bahia, Rua Aristides Novis, 02, Federação, Salvador, Bahia, BrazilThe present work proposes the study of a composite zinc coating obtained through electrodeposition containing nanoparticles of a natural polymer of cotton nanocrystals. In this work, the effect of the addition of cotton nanocrystals on the morphology, structure, corrosion resistance, and hardness of the zinc coating is investigated. The effect of adding these particles on deposition efficiency is also investigated using scanning electron microscope (SEM), X-ray diffraction, roughness and Vicker microhardness measurements, mass loss tests, obtaining potentiodynamic polarization curves, and electrochemical impedance spectroscopy (EIS). Current density efficiency measures were also taken. It was found that the addition of the cotton nanocrystal in the deposition bath lead to the production of a coating with finer morphology and with less roughness compared to Zn coating obtained in the absence of the nanocrystal. However, it was found that the addition of cotton nanocrystal decreased the hardness of the coating. The results show that the addition of cotton nanocrystal increases the current efficiency and corrosion resistance of zinc coating in 0.5 mol/L NaCl solution, and this effect is more significant with the increase in the content of the nanocrystals. With the addition of 10% v/v of cotton nanocrystal the polarization resistance of the coating was improved up to 5-fold while its corrosion rate was reduced by up to 6-fold compared to the zinc coating without nanocrystals.http://www.sciencedirect.com/science/article/pii/S2238785422000163Cotton nanocrystalsZinc coatingElectrodepositionCorrosion |
| spellingShingle | Carolina da S. Lopes Isabel C. Rigoli Carlos A.D. Rovere Claudia L.F. da Rocha Carlos A.C. de Souza Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coating Journal of Materials Research and Technology Cotton nanocrystals Zinc coating Electrodeposition Corrosion |
| title | Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coating |
| title_full | Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coating |
| title_fullStr | Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coating |
| title_full_unstemmed | Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coating |
| title_short | Electrodeposition and the properties of a Zn-Cotton nanocrystal composite coating |
| title_sort | electrodeposition and the properties of a zn cotton nanocrystal composite coating |
| topic | Cotton nanocrystals Zinc coating Electrodeposition Corrosion |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422000163 |
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