Lavolée C., Gressier M., Menu MJ, Garcia J., Sobrino J.-M. - 01/04/2014 - RC - Euro hybrid and structures 2014…

Stainless steels, widely used in many industrial sectors for their good corrosion resistance have seen their purchasing price increase. In these economic and regulatory environments, a shift to lower purchase cost materials, while maintaining the desired properties, would allow manufacturers to remain competitive. The technological purpose is to find an alternative to stainless steels using surface modified low-cost substrates.

In this work, we focused on a strategy of new hybrid sol-gel coatings composed of aluminium and silicon alkoxides to develop innovative architectured sol-gel coatings for corrosion protection on DC04.

The effect of the Si/Al ratio of the aluminium and silicon precursors has been investigated as well as the addition of polyethylene glycol (PEG), used as plasticizer. Corrosion resistance of hybrid coatings was evaluated by immersing hybrid coatings in fluids as water, hot water and sodium chloride solution. Results show the importance of the Si/Al ratio on the anticorrosive performances of the corresponding sol-gel coatings.

Contact :
Jean-Michel Sobrino
Tél. (Service Question Réponse) : 
03 44 67 36 82