Abstract
This work is devoted to examine the effectiveness of the different commercial liquid additives for fish (sweet corn and molasses) on corrosion of mild steel in natural water by different methods (gravimetric and potentiostatic polarization) at room temperature. The corrosion tests were employed to evaluate corrosion rate (CR) and inhibition efficiency (IE %). The maximum inhibition efficiency was obtained for the inhibitor type molasses of 90.00% by gravimetric method for a period of 3 hours and over 31 % by potentiostatic polarization method. It was found that the commercial liquid additives acted as a good inhibitors for the tested environment. Furthermore, the corroded metal was observed by metallographic microscope.
Highlights
IntroductionThis work is devoted to examine the effectiveness of the different commercial liquid additives for fish (sweet corn and molasses) on corrosion of mild steel in natural water by different methods (gravimetric and potentiostatic polarization) at room temperature
This work is devoted to examine the effectiveness of the different commercial liquid additives for fish on corrosion of mild steel in natural water by different methods at room temperature
The micrograph image of the surface exposed to the natural water shows that the surface was damaged in the absence of the inhibitor in comparison with surface exposed to the natural water in presence of the inhibitor
Summary
This work is devoted to examine the effectiveness of the different commercial liquid additives for fish (sweet corn and molasses) on corrosion of mild steel in natural water by different methods (gravimetric and potentiostatic polarization) at room temperature. The corrosion tests were employed to evaluate corrosion rate (CR) and inhibition efficiency (IE %). In order to prevent the corrosive attack on metallic materials, various technologies and methods were applied such as: coatings [4], special steel bar (stainless steel bar, epoxy coated steel reinforcement) [5, 6], electrochemical protection (cathodic protection) [7], corrosion inhibitors [8-20]. Violeta et al [11] showed that the organic inhibitors can both stopped the anodic and cathodic reactions, reducing the corrosion rate of reinforcing steel. Fei-long Fei et al [12] related that the imidazoline quaternary ammonium salt corrosion inhibitor can effectively increase the corrosion resistance of the steel reinforcement
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