Anti-corrosion coatings on SS 304 by incorporation of Pr6O11–TiO2 in siloxane network
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- 作者：K. Jeeva Jothi ; K. Palanivelu
- 关键词：sol ; gel process ; anticorrosion ; nanocomposites ; EIS
- 刊名：Surface Engineering and Applied Electrochemistry
- 出版年：2015
- 出版时间：November 2015
- 年：2015
- 卷：51
- 期：6
- 页码：589-597
- 全文大小：1,479 KB
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K. Palanivelu (1)
1. Central Institute of Plastics Engineering and Technology (CIPET), Guindy, Chennai, 600032, Tamil Nadu, India - 刊物类别：Engineering
- 刊物主题：Manufacturing, Machines and Tools
Russian Library of Science - 出版者：Allerton Press, Inc. distributed exclusively by Springer Science+Business Media LLC
- ISSN：1934-8002
文摘
This paper describes an attempt to develop anticorrosive siloxane coatings based on Pr6O11–TiO2 composite films for SS 304 substrate by sol-gel technique. We demonstrate for the use of praseodymium oxide doped Titanium oxide (Pr6O11–TiO2) nanocomposites loaded in a hybrid sol-gel layer, to effectively protect the underlying steel substrate from corrosion attack. The influence of Pr6O11–TiO2 gives the surprising aspects based on active anti-corrosion coatings. The silica sol was treated with Pr6O11–TiO2 to achieve different level of add-on i.e.) 0–1 wt % of nanocomposites. The influence of different weight percent of nanocomposites on silica matrix for anticorrosion performance was investigated by Electrochemical Impedance Spectroscopy (EIS). Pr6O11–TiO2 nanocomposites loaded in a hybrid sol-gel layer effectively protect the underlying substrate from corrosion attack. The results showed significant improvement in anticorrosion property for higher add-ons up to the optimized percent of nanocomposites. Furthermore, Transmission Electron Microscopy (TEM) and Scanning Electron Microscope Microscopy (SEM) were used to characterize the surface morphology of doped and undoped coatings. The studied showed a synergistic effect between Pr6O11–TiO2 and siloxane matrix has leads to a self-healing coatings. Keywords sol-gel process anticorrosion nanocomposites EIS