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51313-02241-Methodology for Coating Evaluation by Using Electrochemical Impedance Spectroscopy

Product Number: 51313-02241-SG
ISBN: 02241 2013 CP
Author: Erich Salazar
Publication Date: 2013
$0.00
$20.00
$20.00

The aim of the study is to establish a simple methodology for coatings evaluations by using electrochemical impedance spectroscopy (EIS).

Tests were performed to study the coating thermal degradation effect on the magnitude of the impedance |Z| at low frequencies. The degree of reversibility of the module of impedance can be a good prediction of simple corrosion resistance samples.

Additionally it was estimated the water uptake by measuring the coating capacitance using the original and modified Brasher-Kingsbury equation wet glass transition temperature (Tgw) was determined by relationship between log |Z| vs 1/Tabsolute.

Is demonstrated by experiments that the changes in the impedance of the system with organic coating allows to determinate the grade of corrosion protection also the study allows to determinate the reversibility of reactions that occur at interface and obtain the water uptake at room temperature and thermal cycling and elucidate wet glass vitreous temperature of the coating.


KEYWORDS: Corrosion electrochemical impedance organic coating
 

The aim of the study is to establish a simple methodology for coatings evaluations by using electrochemical impedance spectroscopy (EIS).

Tests were performed to study the coating thermal degradation effect on the magnitude of the impedance |Z| at low frequencies. The degree of reversibility of the module of impedance can be a good prediction of simple corrosion resistance samples.

Additionally it was estimated the water uptake by measuring the coating capacitance using the original and modified Brasher-Kingsbury equation wet glass transition temperature (Tgw) was determined by relationship between log |Z| vs 1/Tabsolute.

Is demonstrated by experiments that the changes in the impedance of the system with organic coating allows to determinate the grade of corrosion protection also the study allows to determinate the reversibility of reactions that occur at interface and obtain the water uptake at room temperature and thermal cycling and elucidate wet glass vitreous temperature of the coating.


KEYWORDS: Corrosion electrochemical impedance organic coating
 

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