Electrochemical Behavior Investigation of Cysteine on Nickel Corrosion in Acidic Medium

Abstract

The corrosion inhibition of nickel in 0.5 M H 2 SO 4 by cysteine was investigated with various electrochemical methods and surface observations by SEM. The cyclic voltammetry revealed that the current density is the highest in absence of the cysteine and decreases with increasing inhibitor concentration. The cysteine is an anodic inhibitor. The polarization and electrochemical impedance spectroscopy showed that the cysteine has a poor inhibitive effect. The surface observation by scanning electron microscope corroborates the addition of cysteine has no significant improvement of the surface morphology of nickel electrode in 0.5 M H 2 SO 4. Results obtained by different methods corroborate each other.

Structural and electrochemical corrosion studies of spin coated ZrO2 thin films over stainless steel alloy for bone defect applications

“…Statistical analysis of the data using user defined “ nonlinear least squares curve fit ” with OriginLab Origin pro software, gave details about the E Corr (Corrosion potential), I Corr (corrosion current density) and ba and bc (anodic and cathodic Tafel constants) which is enough to deduce the corrosion resistance details if acquired by the coated samples as compared with the bare Diamond polished samples. 31 Table 1 shows the numeric values of all the parameters and shows a decrease in corrosion potential and an increase in Corrosion current as coating layers increase adding extra corrosion resistance. However, this trend gets a setback in form of cracks that are formed when number of layers are increased that are responsible for contact between body fluid and specimen surface.…”