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Meeting 2017 TMS Annual Meeting & Exhibition
Symposium Pan American Materials Congress: Materials for Oil and Gas Industry
Presentation Title The Corrosion Behavior of Newly Developed API X120 Pipeline Steel in H2S and Moderate Temperature Environments
Author(s) Paul Okonkwo, R. A Shakoor, A M.A Mohamed
On-Site Speaker (Planned) Paul Okonkwo
Abstract Scope The corrosion behavior of newly developed API X120 Pipeline steel was studied in 3.5 wt. % NaCl solution bubbled with H2S at temperature range of 20C to 60C employing potentiodynamic polarization, electrochemical impedance spectroscopy (EIS). The corrosion products formed on the surface of the base metals were characterized using scanning electron microscopy (SEM). It is noticed that the formation of corrosion product layer takes place at both lower and higher temperatures which is mainly comprised of compounds of iron and sulphide. The electrochemical results confirm that the corrosion rate decreases with increasing temperature until it reaches to a maximum value at 40C, and then increases with further increase in temperature. This initial decrease in corrosion rate with increasing temperature can be presumably regarded as the effect of formation of protected layer of mackinawite. However, cracking of the formed mackinawite layer beyond 40C decreases the corrosion rate.
Proceedings Inclusion? Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)


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Evaluation of Non-Destructive Techniques (Thermography, Ultrasound and Eddy Current) for Detection of Failures in Metallic Substrates with Composite Anticorrosive Coatings
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Materials for Facilities Liquefied Petroleum Gas as NFPA
PAN-27: Blends of PVDF with Its Processing Waste: Study of the Mechanical Properties of the Blends Thermally Aged
Structural Integrity of Pipelines
The Corrosion Behavior of Newly Developed API X120 Pipeline Steel in H2S and Moderate Temperature Environments

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