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Title

Corrosion investigation of steel alloy in ethylene glycol-water mixture

Year: 1390
COI: IPEC03_075
Language: EnglishView: 855
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Authors

I Danaee - Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
M NiknejadKhomami - Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
A.A Attar - Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran
M Peykari - Abadan Faculty of Petroleum Engineering, Petroleum University of Technology, Abadan, Iran

Abstract:

The electrochemical behavior of steel alloy in ethylene glycol-water mixture with different concentrations was investigated by polarization curves, AC impedance measurements, current transient and atomic force microscopy. The results obtained showed that corrosion rate was decreased with increasing ethylene glycol concentration. The effect of molybdate as inhibitor was studied and high inhibition efficiency was obtained. It was found that surface passivation was occurred in presence of inhibitor. The inhibiting effect of the molybdate was explained on the basis of the competitive adsorption between the inorganic anions and the aggressive Cl- ions and the adsorption isotherm basically obeysthe Langmuir adsorption isotherm.Thermodynamicparameters for steel corrosion and inhibitor adsorption were determined and reveal that the adsorption process is spontaneous. Also phenomenon of physical adsorption is proposed.

Keywords:

Steel 4130- Ethylene glycol- Corrosion- adsorption-molybdate

Paper COI Code

This Paper COI Code is IPEC03_075. Also You can use the following address to link to this article. This link is permanent and is used as an article registration confirmation in the Civilica reference:

https://civilica.com/doc/260050/

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Danaee, I and NiknejadKhomami, M and Attar, A.A and Peykari, M,1390,Corrosion investigation of steel alloy in ethylene glycol-water mixture,3rd Iranian Petroleum Engineering Congress,Tehran,https://civilica.com/doc/260050

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