Relationship between degradation characteristics of organic coating on internal bottom plate of oil storage tank and constant-phase element parameter values
作者： K. Tokutake , H. Nishi , D. Ito , S. Okazaki , Y. Serizawa
DOI: 10.1016/J.PORGCOAT.2015.05.004
关键词: Electrical impedance 、 Equivalent circuit 、 Materials science 、 Oil storage 、 Composite material 、 Residual 、 Constant phase element 、 Coating 、 Evaluation methods 、 Degradation (geology)
摘要: Abstract A quantitative evaluation method is proposed based on electrical impedance measurements for predicting the residual lifetime of a high-performance anticorrosion organic coating internal bottom plates oil storage tanks. The field data obtained from an actual tank suggest that characteristics degradation were elucidated by three equivalent circuit models including two CPEs (constant-phase elements) in parallel. It was revealed these indicate intact and deteriorating coatings. In addition, process with age can be monitored quantitatively using scatter diagrams CPE parameters.
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