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Paper Details

Corrosion Resistance of Mild Steel Simulated Concrete Pore Solution in Presence of Carboxy Methyl Cellulose

Shanthi T*1 and S. Rajendran S2

Journal Title:Journal of Chemical, Biological and physical sciences
Abstract


Corrosion resistance of mild steel in simulated concrete pore solution (SCPS) Prepared in well water in the absence and presence of carboxy methyl cellulose (CMC) and Zn2+has been evaluated by weight loss method. It is observed that when CMC is added the corrosion inhibition efficiency (IE) increases. As the concentration of CMC increases, inhibition efficiency decreases. 50 ppm of CMC has 98 % IE . 100 ppm of CMC shows 95% IE. When 50 ppm of Zn2+is added to the above system , both system shows 90% and 80% IE.The mechanistic aspects of corrosion inhibition have been investigated by polarization study and AC impedance spectra. The scanning electron microscopy (SEM) study confirms the protection of mild steel surface by strong adsorption of CMC.

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