Different corrosion-resistant coatings based on various SiO2, TiO2, ZrO2 and CeO2oxides have been applied to various steels by the sol-gel method and spray pyrolysis. The obtained experimental coatings were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and weight loss measurements in 3.5% NaCl medium. TiO2 / SiO2 and CeO2/SiO2 coatings treated at lower temperatures (500oC) have been shown to exhibit higher corrosion resistance than ZrO2/SiO2 samples. Increasing the treatment temperature decreases the protective properties of the invesitgated coatings. The enhanced protective properties of TiO2/SiO2 are probably due to their low crystallized fine grained structure and relatively dense surface without visible cracks.
- D. H. Abdeen, M. El Hachach, Mr Koc, M. A. Atieh, Materials 2019, 12, 210
- Ohko Y, Saitoh Sh, Tatsuma T and Fujishima A 2001 Journal of the Electrochemical Society 148 B24].
- D. Wang, G.. P. Bierwagen, Progress in Organic Coatings 64 (2009) 327–338
- W.Cheng, Ch. Li. X Ma, L Yu, G. Liu, Mater. & Design 126 (2017) 155
- Bo-H. Kim, S K. Nataraj, K. S. Yang, H.-G. Woo, J Nanosci. Nanotechnol. 10 (2010) 3331.