IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Corrosion resistance performance of cerium doped silica sol-gel coatings on 304L stainless steel
Zandi Zand, R.; Verbeken, K.; Adriaens, A. (2012). Corrosion resistance performance of cerium doped silica sol-gel coatings on 304L stainless steel. Prog. Org. Coat. 75(4): 463-473. dx.doi.org/10.1016/j.porgcoat.2012.06.008
In: Progress in Organic Coatings. Elsevier: Lausanne. ISSN 0300-9440, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine
Author keywords
    304L stainless steel; Cerium; Bisphenol A; Corrosion inhibitor; Silane;Cross-linking agent

Authors  Top 
  • Zandi Zand, R.
  • Verbeken, K., more
  • Adriaens, A.

Abstract
    The aim of this work is the synthesis and investigation of silane based organic-inorganic hybrid coatings, which can be used to improve the corrosion performance of steel structures subjected to a marine environment. The silane based sol-gel coatings were prepared by dip coating 304L stainless steel in a solution of organically modified silica sol made through hydrolysis and condensation of 3-glycidoxypropyl-trimethoxysilane (GPTMS) as precursor and bisphenol A (BPA) as a cross-linking agent in an acid catalyzed condition. The influence of the addition of cerium and the use of bisphenol A as a cross-linking agent on the microscopic features and morphology as well as on the corrosion resistance of the coatings were examined using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), neutral salt spray tests, potentiodynamic polarization and electrochemical impedance techniques. Results show that cerium modified nano-hybrid coatings exhibit a superior corrosion inhibition performance to that displayed by silica hybrid coatings. Additionally, data showed that the bisphenol A as a cross-linking agent has a significant effect on the morphology and corrosion resistance of the cerium doped silica coating. Omitting the use of bisphenol A causes the creation of defects/cracks in the coating, thereby promoting diffusion of the aggressive electrolyte toward the substrate and decreasing the corrosion resistance of the coating.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors