Electrochemical Corrosion Behavior of API 5L X52 Pipeline Steel in Soil Environment

Document Type : Original Article

Authors

1 Laboratoire de Physique et Chimie des Matériaux, Université Mouloud Mammeri de Tizi-Ouzou, BP 17 RP, Tizi-Ouzou 15000, Algérie

2 Ecole d’Ingénieurs en Sciences Industrielles et Numérique, Université de Reims Champagne Ardenne, 9, bd de la PAIX. 51 097 REIMS cedex, France

Abstract

In this work, the corrosion rate of X52 pipeline steel used in Algerian soil was calculated and compared to that of a simulated soil solution (NS4). The effect of soil related parameters such as pH, temperature and immersion time on the corrosion of steel in NS4 solution is studied using different methods such as open circuit potential, potentiodynamic polarization, electrochemical impedance spectroscopy and energy dispersive spectrometry (EDX) coupled with scanning electron microscopy. The results are well correlated and showed that the corrosion rate increases when the medium is acidic or alkaline and when the temperature increases. The load transfer resistance increases with immersion time up to 3 days and then decreases with the presence of a film of corrosion products on the steel surface which becomes porous. It was also found that the corrosion rate of X52 steel immersed in the aqueous soil extract collected in southern Algeria is the lowest.

Keywords

Analytical and Bioanalytical Electrochemistry
Volume 13, Issue 2
September 2021
Pages 239-263

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History

  • Receive Date: 08 February 2021
  • Revise Date: 05 August 2021
  • Accept Date: 30 August 2021

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