Abstract
A reaction area selected electrochemical corrosion test methods, which are used a focusing pulse YAG laser beam irradiation (laser machining) technique and micro-electrochemical cell techniques, were applied to investigate the re-passivation kinetics of metals, atmospheric corrosion behavior of coated steels and hydrogen entry behavior of coated steels. In this paper, the applications of the techniques for evaluation of post welded heat treatment on electrochemical behavior of low C-13%Cr welded joints, re-passivation behavior of titanium in artificial saliva, detection of atmospheric corrosion generated hydrogen and hydrogen permeation efficiency at scratched areas are described.
