Research of corrosion protection of matal by polyaniline films

In recent years the new anti-corrosion protection of polyaniline has been researched as a hotspot.In this paper,conductive polyaniline were synthesized on stainless steels by in-situ polymerization method and constant potental method.The corrosion resistance of polyaniline was studied by electrochemical anodic polarization curves and electrochemical impedance spectroscopy in 3.5%NaCl.The configuration of polyaniline was discussed by FTIR and XRD.The research results show that Ecorr and Rp of polyaniline on stainless steels were obviously increased.It shows that the film of polyaniline obviously slow down the rate of corrosion of stainless steels in NaCl.