<abstract xmlns="http://www.w3.org/1999/xhtml">The corrosion of metal surfaces causes huge financial damages to the industries annually, what has lead to an increase in the search for substances that can slow down or prevent corrosion rate. Green inhibitors which are biodegradable, without any heavy metals and other toxic compounds, are promoted. Amino acids are attractive as corrosion inhibitors because they are nontoxic. We have used methionine as corrosion inhibitor. Materials under investigation are two kind of low allow carbon steel marked as: Steel 39, Steel 44 usually applied to concrete as reinforcing bars, and manufacture in Elbasan. The inhibition effect of methionine on the corrosion behavior of low allow steel is investigated in sulfuric acid in presence of chloride ions, in form of NaCl (H2SO4 1M + Cl- 10-3M). Potentiodynamic polarization method is used for inhibitor efficiency testing. The pitting corrosion current shows that increasing concentration of the inhibitor causes a decrease in pitting current density, and inhibition efficiency increases with increasing concentration of the inhibitors.</abstract>

The corrosion of metal surfaces causes huge financial damages to the industries annually, what has lead to an increase in the search for substances that can slow down or prevent corrosion rate. Green inhibitors which are biodegradable, without any heavy metals and other toxic compounds, are promoted. Amino acids are attractive as corrosion inhibitors because they are nontoxic. We have used methionine as corrosion inhibitor. Materials under investigation are two kind of low allow carbon steel marked as: Steel 39, Steel 44 usually applied to concrete as reinforcing bars, and manufacture in Elbasan. The inhibition effect of methionine on the corrosion behavior of low allow steel is investigated in sulfuric acid in presence of chloride ions, in form of NaCl (H2SO4 1M + Cl- 10-3M). Potentiodynamic polarization method is used for inhibitor efficiency testing. The pitting corrosion current shows that increasing concentration of the inhibitor causes a decrease in pitting current density, and inhibition efficiency increases with increasing concentration of the inhibitors.

The inhibition effects of methionine on mild steel in acidic media

Natural Sciences Faculty, Chemistry Department, Tirana University, Bulevardi Zogu i Parë, Tirana, Albania

Ovidius University Annals of Chemistry

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"The inhibition effects of methionine on mild steel in acidic media"}

The corrosion of metal surfaces causes huge financial damages to the industries annually, what has lead to an increase in the search for substances that can...

The inhibition effects of methionine on mild steel in acidic media

Pubblicato online: 12 set 2014

Pagine: 39 - 42

Ricevuto: 12 apr 2014

Accettato: 24 mag 2014

DOI: https://doi.org/10.2478/auoc-2014-0007

Parole chiave
amino acid, methionine, potentiodynamic polarization

© Ovidius University Press

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

The inhibition effects of methionine on mild steel in acidic media

Pubblicato online: 12 set 2014

Pagine: 39 - 42

Ricevuto: 12 apr 2014

Accettato: 24 mag 2014

DOI: https://doi.org/10.2478/auoc-2014-0007

Parole chiaveamino acid, methionine, potentiodynamic polarization

© Ovidius University Press

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
amino acid, methionine, potentiodynamic polarization