The effect of Sn concentration on the corrosion resistance of Pb-Sn alloy in H2S04 electrolyte was investigated by potentiodynamic polarization. A new approach to calculate the exchange current density, icol'n was proposed and proved to be in accordance with the experimental results. This study shows that with the increase of alloying Sn, the corrosion rate of the alloy increased and then decre...

In this article, the corrosion inhibition of steel DIN 2391 St 37-4 in acidic medium 5% H2SO4 with and without presence eco inhibitors leaf (Petroselinum Sativum) was examined. Inhibitory properties parsley leaves on were examined by potentiodynamic polarization - Tafel extrapolation, FTIR method order to categorize oxide layer. The test performed static stirring at 600 rpm. By extrapolation ba...

The corrosion problems of TA4 titanium alloy trays were urgent to be solved in the safe and steady production process acetic acid distillation column. According real environment column, behavior simulated azeotropic solutions with a series I - Cl concentrations was investigated by electrochemical impedance spectroscopy (EIS) potentiodynamic polarization measurements. experimental results showed...

Corrosion resistance of pure titanium (Grade 2) and Ti−Pd alloy (Grade 7) was studied using the electrochemical techniques of potentiodynamic measurements and electrochemical impedance spectroscopy (EIS). Measurements were performed at the temperature of 36.6 °C in two solutions: PBS solution with pH of 7.4 simulating conditions of healthy human body, and PBS solution with pH of 5.2 and with th...

The protective performance of zeolite coating on AZ91D magnesium alloy was evaluated using potentiodynamic polarisation and electrochemical impedance spectroscopy (EIS) in 0.1 M sodium chloride solution (NaCl). Electrical equivalent circuit (EEC) was developed based upon hypothetical corrosion mechanisms and simulated to correspond to the experimental data. The morphology and the chemical natur...

Corrosion inhibition of mild steel in 1 M HCl and 0.5 M H2SO4 by dapsone were studied by polarization resistance, Tafel polarization, electrochemical impedance spectroscopy (EIS) and weight loss measurement. Results obtained revealed that inhibition occurs through adsorption of the drug on metal surface without modifying the mechanism of corrosion process. Potentiodynamic polarization suggested...

The corrosion inhibition of AISI309 austenitic stainless steel by 2,2'-Bipyridyl in 0.5M H 2 SO 4 at 298K was studied using the mass loss’ method, the potentiodynamic polarization (Tafel), the linear polarization (LRP) and the electrochemical impedance spectroscopy (EIS). The results showed a mixed inhibition mode and an increase in the charge transfer resistance, due to inhibitor molecules’ ad...