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Synergistic Influence of Leucine on Polyvinyl alcohol in the Corrosion Inhibition of Mild Steel in Molar Hydrochloric Acid − Taguchi Method

Author Affiliations

    Res.J.chem.sci., Volume 4, Issue (3), Pages 10-16, March,18 (2014)

    Abstract

    In this paper, Taguchi method is applied to find the optimum conditions for the synergistic influence of L-leucine on polyvinyl alcohol (PVA) in the corrosion inhibition of mild steel. A L9 orthogonal array of experiments is constructed and the resulted experimental inhibition efficiencies are adopted for the signal to noise ratio and variance analysis (ANOVA). The proposed Taguchi methodology consists of four factors viz., concentration of L-Leucine, concentration of PVA, exposure time and temperature, at three different levels which are connected in sequence wise to achieve the overall inhibition optimization. The experimental results performed with the selected factors and levels were further processed with Qualitek-4 software at bigger is better as quality character to find the optimized conditions. The experimental result at the optimized conditions are used to calculate the synergism parameter and is found be greater than one.

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