Study of a Triazole Derivative as Corrosion Inhibitor for Mild Steel in Phosphoric Acid Solution | Zendy

Lin Wang | Zendy; Mingjie Zhu | Zendy; Fa-Chang Yang | Zendy; Chengwei Gao | Zendy

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Study of a Triazole Derivative as Corrosion Inhibitor for Mild Steel in Phosphoric Acid Solution

Author(s) -

Lin Wang,

Mingjie Zhu,

Fa-Chang Yang,

Chengwei Gao

Publication year - 2012

Publication title -

international journal of corrosion

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.312

H-Index - 18

eISSN - 1687-9333

pISSN - 1687-9325

DOI - 10.1155/2012/573964

Subject(s) - corrosion , adsorption , phosphoric acid , cathodic protection , langmuir adsorption model , polarization (electrochemistry) , materials science , inorganic chemistry , nuclear chemistry , langmuir , corrosion inhibitor , activation energy , chemistry , anode , metallurgy , electrode

The corrosion inhibition by a triazole derivative (PAMT) on mild steel in phosphoric acid (H3PO4) solution has been investigated by weight loss and polarization methods. The experimental results reveal that the compound has a significant inhibiting effect on the corrosion of steel in H3PO4 solution. It also shows good corrosion inhibition at higher concentration of H3PO4. Potentiodynamic polarization studies have shown that the compound acts as a mixed-type inhibitor retarding the anodic and cathodic corrosion reactions with predominant effect on the cathodic reaction. The values of inhibition efficiency obtained from weight loss and polarization measurements are in good agreement. The adsorption of this compound is found to obey the Langmuir adsorption isotherm. Some kinetic and thermodynamic parameters such as apparent activation energy, frequency factor, and adsorption free energy have been calculated and discussed

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