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98383 PROBLEMS, PITFALLS AND PROBES: WELCOME TO THE JUNGLE OF ELECTROCHEMICAL NOISE TECHNOLOGY

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Product Number: 51300-98383-SG
ISBN: 98383 1998 CP
Author: G. L. Edgemon, G. E. C. Bell
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The rise in electrochemical noise (EN) as a corrosion monitoring technique has resulted in unique problems associated with the field application of this method. Many issues relate to the EN probe design. The ability of an electrochemical noise monitoring system to identify and discriminate between localized corrosion mechanisms is related primarily to the capability of the probe to separate the corrosion cell anode from the corresponding cathode. Effectiveness of this separation is largely determined by the details of and the proper design of the probe that is in the environment of interest. No single probe design or geometry can be effectively use in every situation to monitor all types of corrosion. In this paper we focus on a case study and probe development history related to monitoring corrosion in an extremely hostile environment using EN. While the ultimate application of EN was and continues to be successful, the case study shows that patience and persistence was necessary to meet and properly implement the monitoring program. Other possible source of problems and frustration with implementing EN are also discussed. Key words: Electrochemical noise, corrosion monitoring, corrosion surveillance, corrosion sensors
The rise in electrochemical noise (EN) as a corrosion monitoring technique has resulted in unique problems associated with the field application of this method. Many issues relate to the EN probe design. The ability of an electrochemical noise monitoring system to identify and discriminate between localized corrosion mechanisms is related primarily to the capability of the probe to separate the corrosion cell anode from the corresponding cathode. Effectiveness of this separation is largely determined by the details of and the proper design of the probe that is in the environment of interest. No single probe design or geometry can be effectively use in every situation to monitor all types of corrosion. In this paper we focus on a case study and probe development history related to monitoring corrosion in an extremely hostile environment using EN. While the ultimate application of EN was and continues to be successful, the case study shows that patience and persistence was necessary to meet and properly implement the monitoring program. Other possible source of problems and frustration with implementing EN are also discussed. Key words: Electrochemical noise, corrosion monitoring, corrosion surveillance, corrosion sensors
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