Investigation of the polarization and peeling processes of the polymeric covers from the surface of pipe steel

L.S.Nyrkovа,
 
S.A.Оsadchuk,
  

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Mathematical Models and Computing Experiment in Material Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2016, #18
http://www.materials.kiev.ua/article/2119

Abstract

Investigation of peculiarities of electrochemical destruction of coatings on acrylic-polyurethane basis and epoxy basis modified by resin, deposited on the pipe steel Х70, at potential of cathodic polarization –1,5 V in 3% sodium chloride solution showed that at the room temperature, peeling of both types of coatings had cohesive-adhesive character and determined by their properties, solution’s composition and applied potential. The results of the calculations, carried out by the means of building of the mathematical model, algorithm and program, were confirm the character of changing of potential’s values on the surface of defect and current in an electric scheme, received during measuring.


CATHODIC POLARIZATION, DELAMINATION, MATHEMATICAL SIMULATION, PIPE STEEL X70, POLARIZATION POTENTIAL, POTENTIOMETRY, PROTECTIVE POLYMER COATINGS