Corrosion Behavior of Low Carbon Line Pipe Steel in Soil Environment | Zendy

A. Benmoussat | Zendy; M. Hadjel | Zendy

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Corrosion Behavior of Low Carbon Line Pipe Steel in Soil Environment

Author(s) -

A. Benmoussat,

M. Hadjel

Publication year - 2017

Publication title -

eurasian chemico-technological journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.227

H-Index - 9

eISSN - 2522-4867

pISSN - 1562-3920

DOI - 10.18321/ectj626

Subject(s) - corrosion , carbon steel , electrolyte , materials science , polarization (electrochemistry) , dielectric spectroscopy , soil water , electrochemistry , water content , metallurgy , current density , chemistry , soil science , electrode , environmental science , geotechnical engineering , physics , quantum mechanics , engineering

Some operating buried transmission pipeline systems will develop unforeseen surface corrosion. Electrochemical corrosion behavior of low carbon line pipe steel in NS4 soil test solution has been investigated by EIS method. Corrosion phenomenon is accentuated by the soils parameters influence such resistivity, pH, temperature, moisture content and chemical composition of electrolytes contained in soil. Results showed that the steel corrosion increases considerably at acidic pH environments. Corrosion current density increases with temperature in the range from 20 to 60°C. The associated activation energy has been determined. Impedance curves showed that the charge transfer resistance (Rt) increases with increasing immersion duration. Parameters such as corrosion current density (Icorr), polarization resistance (Rp), soil resistivity ( ) can serve as the parameters for evaluation of soil corrosivity.

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