Anion embedded sol-gel films on Al for corrosion protection

Mari Sheffer; Alec Groysman; David Starosvetsky; Natali Savchenko; Daniel Mandlr

doi:10.1016/j.corsci.2004.05.001

Anion embedded sol-gel films on Al for corrosion protection

Mari Sheffer, Alec Groysman, David Starosvetsky, Natali Savchenko, Daniel Mandlr^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

We report here on the successful incorporation of organic 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 hydrophobia 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 organic anion tends to stay inside a phenyl-trimethoxysilane (PTMOS) based sol-gel film due to π-interactions. Our findings, which are derived primarily from potentiodynamic polarization measurements, electrochemical noise, scanning electron microscopy measurements and Auger electron spectroscopy (AES), clearly show that the organic phosphonate adds to the protection efficiency of the sol-gel film.

Original language	English
Pages (from-to)	2975-2985
Number of pages	11
Journal	Corrosion Science
Volume	46
Issue number	12
DOIs	https://doi.org/10.1016/j.corsci.2004.05.001
State	Published - Dec 2004

Bibliographical note

Funding Information:
This work was supported by the Ministry of Science, Culture and Sports under the strategic research (contract 1095).

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10.1016/j.corsci.2004.05.001

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title = "Anion embedded sol-gel films on Al for corrosion protection",

abstract = "We report here on the successful incorporation of organic 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 hydrophobia 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 organic anion tends to stay inside a phenyl-trimethoxysilane (PTMOS) based sol-gel film due to π-interactions. Our findings, which are derived primarily from potentiodynamic polarization measurements, electrochemical noise, scanning electron microscopy measurements and Auger electron spectroscopy (AES), clearly show that the organic phosphonate adds to the protection efficiency of the sol-gel film.",

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AU - Sheffer, Mari

AU - Groysman, Alec

AU - Starosvetsky, David

AU - Savchenko, Natali

AU - Mandlr, Daniel

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Anion embedded sol-gel films on Al for corrosion protection

Abstract

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