Title: Corrosion Behavior of X60 Steel in CO_2 Environment at High Temperature and High Pressure
Abstract: The corrosion characteristics of X60 steel at three high temperatures and in the environment of CO_2 at 2MPa partial pressure were investigated in autoclave by weight loss evaluation along with SEM,XRD and electronprobe micro-analysis.The results showed that at 90℃,120℃and 150℃,the steel was attacked seriously by the CO_2 and exhibited rather high corrosion rate.With the temperature increasing,the corrosion rate showed a peak, and the maximum rate appeared at 120℃.The main corrosion scale consisted of Fe_3C and FeCO_3.In the experimental process,the features of localized corrosion was presented,i.e pitting corrosion and strip corrosion. Cl~- was the excitant to pitting corrosion.The CO_2 corrosion was affected by a series of factors including temperature,corrosion product scale,microstructure of steel,and Cl~-,etc.
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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