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09509 Measurement of CPC Performance Using EIS Based Coating Degradation Sensors

Picture for 09509 Measurement of CPC Performance Using EIS Based Coating Degradation Sensors
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Product Number: 51300-09509-SG
ISBN: 09509 2009 CP
Author: Marta Andrea Jakab and Garth Tormoen
Publication Date: 2009
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The cost associated with maintenance and field replacement of military assets is often reduced by the application of temporary coating systems that protect the military vehicles against corrosion. The performance of these coatings can be assessed using coating degradation sensors. This paper addresses the laboratory studies of an impedance based coating degradation sensor that utilizes wireless, mote based technology. The ability of the coating degradation sensor to assess coating failures in simulated coastal environments is demonstrated. The results are compared with those of field exposure at Daytona Beach, FL. The effects of the sensor design and measurement parameters on the sensitivity of the sensor are explored. Examples of the sensor output to determine failures of corrosion preventive compounds (CPCs) in case of boldly exposed surfaces and occluded sites will be presented.

Keywords: corrosion preventive compounds, wireless sensors, electrochemical impedance
The cost associated with maintenance and field replacement of military assets is often reduced by the application of temporary coating systems that protect the military vehicles against corrosion. The performance of these coatings can be assessed using coating degradation sensors. This paper addresses the laboratory studies of an impedance based coating degradation sensor that utilizes wireless, mote based technology. The ability of the coating degradation sensor to assess coating failures in simulated coastal environments is demonstrated. The results are compared with those of field exposure at Daytona Beach, FL. The effects of the sensor design and measurement parameters on the sensitivity of the sensor are explored. Examples of the sensor output to determine failures of corrosion preventive compounds (CPCs) in case of boldly exposed surfaces and occluded sites will be presented.

Keywords: corrosion preventive compounds, wireless sensors, electrochemical impedance
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