|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Pan American Materials Congress: Materials for Oil and Gas Industry
||The Corrosion Behavior of Newly Developed API X120 Pipeline Steel in H2S and Moderate Temperature Environments
||Paul Okonkwo, R. A Shakoor, A M.A Mohamed
|On-Site Speaker (Planned)
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 20°C to 60°C 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 40°C, 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 40°C decreases the corrosion rate.
||Planned: Stand-alone book in which only your symposium’s papers would appear (indicate title in comments section below)