Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonate
The properties of hard anodizing layers formed on 2014 Al alloy in sulphuric acid electrolyte containing sodium lignin sulphonate were investigated. The corrosion behavior of 2014 Al alloy has been studied using potentiodynamic polarization technique. Anodic layers morphology and composition were ex...
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| Format: | Article |
| Language: | English |
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Egyptian Petroleum Research Institute
2018-12-01
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| Series: | Egyptian Journal of Petroleum |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1110062117300892 |
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| author | Omar E. Abdel-Salam Madiha A. Shoeib Hagar Ashour Elkilany |
| author_facet | Omar E. Abdel-Salam Madiha A. Shoeib Hagar Ashour Elkilany |
| author_sort | Omar E. Abdel-Salam |
| collection | DOAJ |
| description | The properties of hard anodizing layers formed on 2014 Al alloy in sulphuric acid electrolyte containing sodium lignin sulphonate were investigated. The corrosion behavior of 2014 Al alloy has been studied using potentiodynamic polarization technique. Anodic layers morphology and composition were examined by scanning electron microscope, energy dispersion X-ray (EDX), X-ray diffraction (XRD) and Fourier infrared spectroscopy (FTIR). The results showed that the corrosion resistance has been enhanced after hard anodizing of 2014 Al alloy. Addition of lignin sulphonate to the sulphuric acid electrolyte significantly improved the corrosion resistance of the anodized 2014 aluminum alloy by adsorption on copper-intermetallic phases. Adsorption of sodium lignin sulphonate on oxide surface has been confirmed by SEM, EDX, and FTIR. Phenolic and carboxylic groups in sodium lignin sulphonate are functional groups, which are responsible of complex formation on oxide surface. The morphology of the hard anodizing layer is non-homogenous due to the high copper content of 2014 Al alloy. Addition of sodium lignin sulphonate resulted in the formation of anodic layers with more homogeneity and fewer cracks. Keywords: Hard anodizing, Al-Cu alloy, Corrosion, Potentiodynamic polarization, FTIR, Sodium lignin sulphonate, Green inhibitor, SEM |
| format | Article |
| id | doaj-art-ff2bb6feb5cf46fcba6e3580995e14e1 |
| institution | Kabale University |
| issn | 1110-0621 |
| language | English |
| publishDate | 2018-12-01 |
| publisher | Egyptian Petroleum Research Institute |
| record_format | Article |
| series | Egyptian Journal of Petroleum |
| spelling | doaj-art-ff2bb6feb5cf46fcba6e3580995e14e12025-08-20T03:25:42ZengEgyptian Petroleum Research InstituteEgyptian Journal of Petroleum1110-06212018-12-0127449750410.1016/j.ejpe.2017.07.014Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonateOmar E. Abdel-Salam0Madiha A. Shoeib1Hagar Ashour Elkilany2Chemical Engineering Department, Faculty of Engineering, Cairo University, EgyptCentral Metallurgical Research and Development Institute, EgyptChemical Engineer in Helwan of Engineering Industries Company, Egypt; Corresponding author.The properties of hard anodizing layers formed on 2014 Al alloy in sulphuric acid electrolyte containing sodium lignin sulphonate were investigated. The corrosion behavior of 2014 Al alloy has been studied using potentiodynamic polarization technique. Anodic layers morphology and composition were examined by scanning electron microscope, energy dispersion X-ray (EDX), X-ray diffraction (XRD) and Fourier infrared spectroscopy (FTIR). The results showed that the corrosion resistance has been enhanced after hard anodizing of 2014 Al alloy. Addition of lignin sulphonate to the sulphuric acid electrolyte significantly improved the corrosion resistance of the anodized 2014 aluminum alloy by adsorption on copper-intermetallic phases. Adsorption of sodium lignin sulphonate on oxide surface has been confirmed by SEM, EDX, and FTIR. Phenolic and carboxylic groups in sodium lignin sulphonate are functional groups, which are responsible of complex formation on oxide surface. The morphology of the hard anodizing layer is non-homogenous due to the high copper content of 2014 Al alloy. Addition of sodium lignin sulphonate resulted in the formation of anodic layers with more homogeneity and fewer cracks. Keywords: Hard anodizing, Al-Cu alloy, Corrosion, Potentiodynamic polarization, FTIR, Sodium lignin sulphonate, Green inhibitor, SEMhttp://www.sciencedirect.com/science/article/pii/S1110062117300892 |
| spellingShingle | Omar E. Abdel-Salam Madiha A. Shoeib Hagar Ashour Elkilany Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonate Egyptian Journal of Petroleum |
| title | Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonate |
| title_full | Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonate |
| title_fullStr | Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonate |
| title_full_unstemmed | Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonate |
| title_short | Characterization of the hard anodizing layers formed on 2014-T3 Al alloy, in sulphuric acid electrolyte containing sodium lignin sulphonate |
| title_sort | characterization of the hard anodizing layers formed on 2014 t3 al alloy in sulphuric acid electrolyte containing sodium lignin sulphonate |
| url | http://www.sciencedirect.com/science/article/pii/S1110062117300892 |
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