|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Energy Materials 2017: Materials for Oil and Gas and AMREE Oil & Gas III
||Novel Cu-bearing Antibacterial Pipeline Steels for Microbiologically Induced Corrosion Control
||Xianbo Shi, Yiyin Shan, Wei Yan, Wei Wang, Zhenguo Yang, Ke Yang
|On-Site Speaker (Planned)
Novel Cu-bearing pipeline steels were fabricated by making proper Cu alloying designs. Antibacterial performance and MIC behavior were carried out by antibacterial tests, electrochemistrical monitor, corrosion product analyses and confocal laser scanning microscope (CLSM). Cu-bearing pipeline steels had strong antibacterial performance against E. coli and S.aureus compared with X80 steel. 1.0Cu steel showed excellent resistance to SRB with remarkable strength enhancement by nano-scale Cu-rich precipitates and good impact toughness compared with X80 steel. Cu-rich precipitates were found to be responsible for the antibacterial capability. The linear polarization resistances of both X80 and 1.0Cu steels in the soil-extract solution with SRB were dramatically decreased after 2 days, leading to the corrosion current density value of X80 steel was much higher than that of 1.0Cu steel. The corrosion product analysis revealed that much biofilm produced by SRB was the reason that many pits and larger pit depth on X80 steel.
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