Influence of cathode polarization on protective properties of thermoreactive coatings for main pipelines


  • S. O. Osadchuk, L. I. Nyrkova, A. O. Rybakov, S. L. Melnychuk


cathodic disbondment, cathodic polarization, hybrid-epoxide coating, polyurethane coating, protective potential.


The effect of cathodic polarization under cyclical temperature changing (from room temperature to 70 oC) on the protective
properties of new and artificially aged heat-curing coatings for main pipelines has been investigated. It is shown that cathodic
disbondment of coatings depends on their properties, temperature, applied potential. It has been established that the reducing (by
absolute value) of the protective potential (with the IR component) from -1.45 to -0.75 V facilitate to retaining of the protective
properties of coatings: the disbondment radius of a new hybrid-epoxide coating decreases in 3.3 times, aged coating – in 1.7
times, new and aged polyurethane coating – more than 20 times.


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How to Cite

A. O. Rybakov, S. L. Melnychuk, S. O. O. L. I. N. (2019). Influence of cathode polarization on protective properties of thermoreactive coatings for main pipelines. JOURNAL OF HYDROCARBON POWER ENGINEERING, 5(2), 52–58. Retrieved from