Solvent Free Synthesis of Four Cationic Surfactants: Evaluation of Their Corrosion Inhibition Properties on Zinc Phosphate Conversion Coating on Mild Steel

2015 ◽  
Vol 52 (5) ◽  
pp. 396-405 ◽  
Author(s):  
Ruby Thomas ◽  
M. J. Umapathy
Keyword(s):  
Mild Steel ◽  
Corrosion Inhibition ◽  
Cationic Surfactants ◽  
Zinc Phosphate ◽  
Conversion Coating ◽  
Solvent Free ◽  
Solvent Free Synthesis

Adsorption and corrosion inhibition characteristics of two medicinal molecules

2019 ◽  
Author(s):  
Chem Int
Keyword(s):  
Hydrochloric Acid ◽  
Corrosion Rate ◽  
Mild Steel ◽  
Corrosion Inhibition ◽  
Half Life ◽  
Thermodynamic Data ◽  
Inhibition Efficiency ◽  
Gravimetric Method ◽  
Corrosive Environment ◽  
Corrosion Inhibition Efficiency

The corrosion inhibition characteristics of two medicinal molecules phenylalanine and rutin on mild steel in 1.0M Hydrochloric acid were evaluated using gravimetric method. Corrosion inhibition efficiency of 83.78 and 90.40 % was obtained respectively after seven days. However, phenylalanine showed weak accumulative higher corrosion inhibition efficiency. The presence of both molecules in the corrosive environment reduced the corrosion rate constant and increased the material half-life. Thermodynamic data calculated suggests a spontaneous adsorption of the molecules on the mild steel’s surface.

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