Comparative study on the corrosion behaviour of Lord Razor Blade Steel (LRBS) in aqueous environments

Abstract

The corrosion resistance of Lord Razor Blade Steel (LRBS) specimens made of low carbon steel has been compared in aqueous borate (pH 9.0), 1.0 M NaOH and 0.5 M NaCl solutions at 25°C. The investigation was accomplished utilizing potentiodynamic polarization curves (PPC's), cyclic potentiodynamic polarization (CPP), electrochemical impedance spectroscopy (EIS), open circuit potential (OCP) and chronoamperometric (j-t transients) techniques, complemented by SEM study. The study was also carried out on mild steel (MS) for comparison. It was found that the corrosion resistance of LRBS specimens in the borate solution is higher than that in NaCl and NaOH solutions. Moreover, the LRBS specimens possess a higher corrosion resistance than the MS in the same tested solutions.

The bifunctional role played by thiocyanate anions on the active dissolution and the passive film of titanium in hydrochloric acid

“…The capacitive loop at HF is attributed to the charge transfer of the corrosion process and double-layer behaviour. The existence of the Warburg diffusion tail supports the idea that diffusion controls the Ti corrosion in HCl solution [44]. One time constant and one Warburg impedance are shown in the EIS charts.…”