A review of electrochemistry of relevance to environment-assisted cracking in light water reactors

摘要: The electrochemistry of relevance to environment-assisted cracking in high temperature, low conductivity water is critically reviewed. review covers corrosion potential and electrochemical polarisation measurements, thermodynamics, also experimental measurements mathematical modelling the cracks crevices. There a lack critical data relation electrode kinetics relevant cathodic reduction reactions, namely H+, H2O, O2, H2O2 steady-state anodic reaction are limited. Transient current associated with initially film-free metal, have been made for range conditions but there uncertainty regarding role fluid flow transport processes on decay characteristics. A number pH crevices experiments difficult carry out reliably hence practical very Recent developments significantly enhanced qualitative understanding controlling local reliability quantitative predictions limited by paucity reliable input data.