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Effect of Organics Corrosion Inhibitors on the Corrosion of 304SS in 3.5% NaCl

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This work is a preliminary study with the purpose to find some information about the effectiveness of Ceraflava (CF) extract as inhibitor in 3.5 %NaCl, CF or yellow bees wax from honey farm used as corrosion inhibitor. In particular the purpose of this study is to determine the ability of CF in inhibiting the corrosion rate. The inhibition of the CF extract on304SS in 3.5% NaCl is carried out with potentiodynamic polarization, EIS and SEM. The findings show that CF can be used as corrosion inhibitor in SS 304 even though CF can only be categorized as moderate performance of inhibitors. However, it was observed that inhibitors can be adsorbed on the 304SS surface so it inhibits the corrosion rate. Based on the potentiodynamic polarization and EIS results, the inhibition efficiencies are 59.77% and 53.84% in 0.2g/L inhibitor concentration. Potentiodynamic polarization curves indicate the mixed type of the inhibitors. The adsorption of the inhibitors on the 304SS surface was found to obey to Langmuir adsorption isotherm. Thermodynamic adsorption parameter were calculated and discussed. It is expected this research may be recommended in the use of CFCs in saline solution or other solutions on the science of corrosion controlling using organic inhibitors.
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304SS; Electrochemical Technique; Inhibitors; NaCl Solution; SEM

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