Anion embedded sol-gel films on Al for corrosion protection.

Citation:

Sheffer M, Groysman A, Starosvetsky D, Savchenko N, Mandler D. Anion embedded sol-gel films on Al for corrosion protection. Corros. Sci.Corrosion Science. 2004;46 (12) :2975 - 2985.

Date Published:

2004///

Abstract:

We report here on the successful incorporation of org. anions into a sol-gel film on Al as a means of enhancing the protection against corrosion. Following our previous study where we showed that hydrophobic sol-gel films provided pronounced corrosion inhibition, we studied the corrosion inhibition that phenylphosphonic acid (PPA) has when embedded inside a thin sol-gel coating on Al. The anion of this org. acid tends to stay inside a phenyltrimethoxysilane (PTMOS) based sol-gel film due to π-interactions. Our findings, which are derived primarily from potentiodynamic polarization measurements, electrochem. noise, SEM measurements and Auger electron spectroscopy (AES), clearly show that the org. phosphonate adds to the protection efficiency of the sol-gel film. [on SciFinder(R)]

Notes:

CAPLUS AN 2004:793566(Journal)