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EIS Study on the Behavior of High Performance Topcoats Over Metal Substrates

EIS Study on the Behavior of High Performance Topcoats Over Metal Substrates
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Electrochemical impedance spectroscopy (EIS) is used to evaluate the influence of a topcoat to impact corrosion protection after accelerated exposure testing (QUV, xenon arc, Prohesion). The ability to monitor early undercoat corrosion, at progressive stages of the accelerated weathering tests, was a major factor in selecting the EIS testing method. 

Product Number: 51219-201-SG
Author: Donald C. Lawson III
Publication Date: 2019
Industry: Coatings
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$20.00
$20.00

Electrochemical impedance spectroscopy (EIS) is used to evaluate the influence of a topcoat to impact corrosion protection after accelerated exposure testing (QUV, xenon arc, Prohesion). The ability to monitor early undercoat corrosion, at progressive stages of the accelerated weathering tests, was a major factor in selecting the EIS testing method. We compare various resin chemistries, typically used for high performance topcoats, for any contribution to the corrosion protection of the metal substrate. In this study, we compare commercially available two-component topcoat systems. This paper examines the performance of FEVE, polyurethane, and polysiloxane topcoat systems to provide additional corrosion protection for metal substrates.

Electrochemical impedance spectroscopy (EIS) is used to evaluate the influence of a topcoat to impact corrosion protection after accelerated exposure testing (QUV, xenon arc, Prohesion). The ability to monitor early undercoat corrosion, at progressive stages of the accelerated weathering tests, was a major factor in selecting the EIS testing method. We compare various resin chemistries, typically used for high performance topcoats, for any contribution to the corrosion protection of the metal substrate. In this study, we compare commercially available two-component topcoat systems. This paper examines the performance of FEVE, polyurethane, and polysiloxane topcoat systems to provide additional corrosion protection for metal substrates.

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