Water Penetration Behavior of Epoxy Coating Based on Distribution of Relaxation Time and Finite Element Simulation
In fact,the variation of water content within an organic coating will affect its corrosion pro-tection performance.Thus,the penetration of water in an epoxy coating would be studied via distribution of relaxation time(DRT)technique and finite element simulation method in terms of the perspective of mi-cro electrochemistry in this article.Results show that the water penetration process of the epoxy coating may be differentiated into three stages:initial stage,saturation stage and failure stage.In the three stag-es,the different content of water and corrosive medium inside the coating can seriously affect the varia-tion of capacitance of the coating.This paper provides a new comprehensive analysis method for the mechanism study of organic protective coatings.
epoxy coatingwater penetrationdistribution of relaxation timefinite element simula-tioncorrosion mechanism
万方数据
维普
