241 research outputs found
Corrosion Inhibition on Mild Steel by Phosphonium Salts in 1M HNO3 Aqueous Medium
The corrosion inhibition on mild steel by phosphonium salts in 1 M HNO3 medium has been investigated by weight loss and polarization techniques. The result revealed that these derivatives are excellent inhibitors. Potentiostatic polarization, impedance and electrochemical noise studies showed mixed type inhibitors. Ellipsometer, quantum chemical and FTIR results indicated Phosphonium bromide derivatives exhibit excellent corrosion protective thin layer performance
Electrochemical Oxidation Assessment and Interaction of 2-aminoethanol and N, N-diethylethanamine Propagation in Acidic Medium
Electro�oxidation and inhibitor performance of copper specimens in 1 M hydrochloric acid solu�
tion was investigated at room temperature by linear potentiodynamic polarization and gravimetric method in
the presence of 2�aminoethanol (A) and N, N�diethylethanamine (D) as an inorganic inhibitor. The effect of
the inhibitory concentration on the corrosion behavior of copper was studied over 288 hrs at 298°K. The
inhibitory efficiency rise up to 96% for single induced and 98% for synergistic behavior. The adsorption
mechanism characteristic was supported by SEM/EDX analysis and adsorption isotherm. From all indica�
tion, the inhibitive efficiency of these compounds majorly depends on their molecular structure and concen�
tration. The blocking effects of the surface interface were also explained on the basis of the inhibitor active
action. 2�aminoethanol and N, N�diethylethanamine inhibits copper in 1 M HCl by strictly affecting both
the anodic and cathodic sites. Portion of the surface covered calculated was also found to follow Langmuir
adsorption isotherm
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