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Researches on AC Corrosion Risk Assessment Criteria for Cathodically Protected Carbon Steel

Experiments to study the effects of AC interference on cathodic protection (CP). Changes of CP potential and current density under AC interference and AC corrosion rates obtained. Effective CP potential under AC interference analyzed. Interference compared.

Product Number: 51317--8962-SG
ISBN: 8962 2017 CP
Author: Yanxia Du
Publication Date: 2017
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AC interference experiments were carried out to study the effects of AC interference on cathodic protection(CP) parameters and AC corrosion rate in different conditions. The effects of AC interference on CP current requirement and CP potentials were obtained for two different controlling modes of CP system such as constant potential mode and constant current mode. Based on weight loss experiments results of different AC current densities and CP levels AC corrosion risk assessment criteria graph considering both AC interference and CP parameters was established. Besides the AC corrosion mechanism for different levels of CP was studied and discussed.

Key words: AC interference, cathodic protection, changes of CP parameters, AC corrosion risk assessment

 

AC interference experiments were carried out to study the effects of AC interference on cathodic protection(CP) parameters and AC corrosion rate in different conditions. The effects of AC interference on CP current requirement and CP potentials were obtained for two different controlling modes of CP system such as constant potential mode and constant current mode. Based on weight loss experiments results of different AC current densities and CP levels AC corrosion risk assessment criteria graph considering both AC interference and CP parameters was established. Besides the AC corrosion mechanism for different levels of CP was studied and discussed.

Key words: AC interference, cathodic protection, changes of CP parameters, AC corrosion risk assessment

 

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