ANTICORROSIVE COATING OF STEEL WITH HYBRID OXIDE / PORPHYRIN SANDWICH LAYERS DEPOSITED BY DROP CASTING METHOD

1 VAIDA Mirela
Co-authors:
1 BIRDEANU Mihaela 2 LASCU Anca 2 PALADE Anca 2 FRINGU Ionela 2 FAGADAR – COSMA Eugenia
Institutions:
1 National Institute for Research and Development in Electrochemistry and Condensed Matter, Plautius Andronescu Street, 300224 Timisoara, Romania, EU
2 Institute of Chemistry Timisoara of the Romanian Academy, 24 M. Viteazu Ave., 300223 Timisoara, Romania, EU
Conference:
9th International Conference on Nanomaterials - Research & Application, Hotel Voronez I, Brno, Czech Republic, EU, October 18th - 20th 2017
Proceedings:
Proceedings 9th International Conference on Nanomaterials - Research & Application
Pages:
372-377
ISBN:
978-80-87294-81-9
ISSN:
2694-930X
Published:
8th March 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
24 views / 4 downloads
Abstract

This paper presents some results of the study regarding the corrosion inhibition properties evaluated in HCl environment of drop casting deposited layers on steel, using ZnV2O6 oxide (obtained by hydrothermal and co-precipitation methods) and two Zn–metalloporphyrins, namely: Zn–5-pyridyl-10,15,20-tris(3,4-dimethoxyphenyl)-porphyrin (ZnPyDiMeOPP) and Zn-5(3OH-phenyl)-10,15, 20-tris-(3,4-dimethoxyphenyl)-porphyrin (Zn3OHtris34DiMeOPP).The open circuit potential measurement and potentiodynamic polarization electrochemical technique with Tafel representation were used to investigate the corrosion protection of mixed sandwich deposited layers.The performed tests revealed that the best corrosion resistance was obtained in the case of the steel coated with hydrothermally obtained ZnV2O6 oxide as first layer and Zn–5-pyridyl-10,15,20-tris(3,4-dimethoxyphenyl)-porphyrin (ZnPyDiMeOPP) as the second layer, i. e. 70.58 % inhibition efficiency.

Keywords: zinc oxides, porphyrin, thin films, AFM, corrosion
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