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| Study on the corrosion properties of SPV50Q steel in H2S-containing sour environment |
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| 南京工业大学 |
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Abstract The corrosion properties of SPV50Q steel were performed in H2S-containing sour environment by potentiodynamic polarization measurement and electrochemical impedance spectroscopy (EIS). The results show that the presence of H2S considerably influences the corrosion process of SPV50Q steel and its corrosion tate increases with increasing H2S cotent. With decreasing pH and increasing in temperature of the testing solutio, the corrosion of this steel is also enhanced. Although the semicircular diameter of capacitive loop increases with immersion time, its variation amplitude is not obviously great and begins to diminish after certain periodic time, suggesting that the sulfide film formed on the surface can not effectively prevent SPV50Q steel for avoiding the further corrosion.
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Received: 12 January 2006
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