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98380 Electrochemical Noise Methods Applied to the Study of Organic Coatings and Pretreatments

Picture for 98380 Electrochemical Noise Methods Applied
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Product Number: 51300-98380-SG
ISBN: 98380 1998 CP
Author: G.P. Bierwagen, D.E.Tallman, S.Touzain, A. Smith, R. Twite, V. Balbyshev, Y.Pae
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The use of electrochemical noise methods (ENM) to examine organic coatings was first performed in 1986 by Skerry and Eden. The technique uses the spontaneous voltage and current noise that occurs between two identical coated electrodes in electrolyte immersion to determine resistance properties of the coating as well as low frequency “noise” impedance data for the system. It is a non-perturbing measurement, and one that allows judgement and ranking of coating systems performance. Our paper will summarize work in our lab over the past five years on the use of ENM for examining the properties of organic coatings and pretreatment over metals. We have studied marine coatings, pipeline coatings, coil coatings, electrodeposited organic coatings (e-coats), and aircraft coatings by this method and found it to be useful, especially when used in conjunction with impedance and other electrochemical techniques. Key Words: electrochemical noise methoak, electrochemical impedance spectroscopy, organic coatings, metal pretreatment, noise instrumentation, cold-rolled steel, Al 2024 T-3, Al 7 A075–T-6
The use of electrochemical noise methods (ENM) to examine organic coatings was first performed in 1986 by Skerry and Eden. The technique uses the spontaneous voltage and current noise that occurs between two identical coated electrodes in electrolyte immersion to determine resistance properties of the coating as well as low frequency “noise” impedance data for the system. It is a non-perturbing measurement, and one that allows judgement and ranking of coating systems performance. Our paper will summarize work in our lab over the past five years on the use of ENM for examining the properties of organic coatings and pretreatment over metals. We have studied marine coatings, pipeline coatings, coil coatings, electrodeposited organic coatings (e-coats), and aircraft coatings by this method and found it to be useful, especially when used in conjunction with impedance and other electrochemical techniques. Key Words: electrochemical noise methoak, electrochemical impedance spectroscopy, organic coatings, metal pretreatment, noise instrumentation, cold-rolled steel, Al 2024 T-3, Al 7 A075–T-6
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