Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich Environments
In this study, the effect of the addition of Nd3+ ions as a corrosion inhibitor of the API X70 steel in a medium rich in chlorides was evaluated. The performance of the Nd3+ ions was evaluated by means of electrochemical techniques such as potentiodynamic polarization curves, open circuit potential...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/9328317 |
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| author | D. M. Martinez de la Escalera J. J. Ramos-Hernandez E. Porcayo-Palafox J. Porcayo-Calderon J. G. Gonzalez-Rodriguez L. Martinez-Gomez |
| author_facet | D. M. Martinez de la Escalera J. J. Ramos-Hernandez E. Porcayo-Palafox J. Porcayo-Calderon J. G. Gonzalez-Rodriguez L. Martinez-Gomez |
| author_sort | D. M. Martinez de la Escalera |
| collection | DOAJ |
| description | In this study, the effect of the addition of Nd3+ ions as a corrosion inhibitor of the API X70 steel in a medium rich in chlorides was evaluated. The performance of the Nd3+ ions was evaluated by means of electrochemical techniques such as potentiodynamic polarization curves, open circuit potential measurements, linear polarization resistance, and electrochemical impedance spectroscopy, as well as by means of scanning electron microscopy and EDS measurements. The results showed that Nd3+ ions reduce the corrosion rate of steel at concentrations as low as 0.001 M Nd3+. At higher concentrations, the inhibition efficiency was only slightly affected although the concentration of chloride ions was increased by the addition of the inhibitor. The adsorption of the Nd3+ ions promotes the formation of a protective layer of oxides/hydroxides on the metal surface, thereby reducing the exchange rate of electrons. Nd3+ ions act as a mixed inhibitor with a strong predominant cathodic effect. |
| format | Article |
| id | doaj-art-c01722c4020143c0bb6f4d2cdef50acf |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-c01722c4020143c0bb6f4d2cdef50acf2025-02-03T07:25:51ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422018-01-01201810.1155/2018/93283179328317Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich EnvironmentsD. M. Martinez de la Escalera0J. J. Ramos-Hernandez1E. Porcayo-Palafox2J. Porcayo-Calderon3J. G. Gonzalez-Rodriguez4L. Martinez-Gomez5Facultad de Ingeniería, Universidad Autónoma de Campeche, Campus V, Av. Ing. Humberto Lanz, 24085 Campeche, CAM, MexicoInstituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Avenida Universidad s/n, 62210 Cuernavaca, MOR, MexicoCIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, 62209 Cuernavaca, MOR, MexicoCIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, 62209 Cuernavaca, MOR, MexicoCIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, 62209 Cuernavaca, MOR, MexicoInstituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Avenida Universidad s/n, 62210 Cuernavaca, MOR, MexicoIn this study, the effect of the addition of Nd3+ ions as a corrosion inhibitor of the API X70 steel in a medium rich in chlorides was evaluated. The performance of the Nd3+ ions was evaluated by means of electrochemical techniques such as potentiodynamic polarization curves, open circuit potential measurements, linear polarization resistance, and electrochemical impedance spectroscopy, as well as by means of scanning electron microscopy and EDS measurements. The results showed that Nd3+ ions reduce the corrosion rate of steel at concentrations as low as 0.001 M Nd3+. At higher concentrations, the inhibition efficiency was only slightly affected although the concentration of chloride ions was increased by the addition of the inhibitor. The adsorption of the Nd3+ ions promotes the formation of a protective layer of oxides/hydroxides on the metal surface, thereby reducing the exchange rate of electrons. Nd3+ ions act as a mixed inhibitor with a strong predominant cathodic effect.http://dx.doi.org/10.1155/2018/9328317 |
| spellingShingle | D. M. Martinez de la Escalera J. J. Ramos-Hernandez E. Porcayo-Palafox J. Porcayo-Calderon J. G. Gonzalez-Rodriguez L. Martinez-Gomez Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich Environments Advances in Materials Science and Engineering |
| title | Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich Environments |
| title_full | Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich Environments |
| title_fullStr | Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich Environments |
| title_full_unstemmed | Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich Environments |
| title_short | Effect of Nd3+ Ion Concentration on the Corrosion Resistance of API X70 Steel in Chloride-Rich Environments |
| title_sort | effect of nd3 ion concentration on the corrosion resistance of api x70 steel in chloride rich environments |
| url | http://dx.doi.org/10.1155/2018/9328317 |
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