Abstract
Corrosion is one of the major destruction processes involved in material loss, and its prevention is paramount in protecting investments. The present work shows a new contribution to the design of a new protective system based on poly(orthophenylenediamine) (PoPD)–nano- TiO2 composites. The structure and properties of PoPD– TiO2 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), Cyclicvoltammetry (CV), Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) techniques. Thermal stability of the composite was studied by Thermogravimetric analysis (TGA). The anti-corrosion behavior of PoPD– TiO2 nanocomposites has been investigated in 3.5 wt.% NaCl solution using potentiodynamic polarization and electrochemical impedance spectroscopic (EIS) measurements. Corrosion studies revealed that PoPD– TiO2 nanocomposites coating exhibited excellent anti-corrosive properties compared with PoPD coated and uncoated 316L SS.
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