Mitigating corrosion of deposit-covered carbon steel in solution containing sulfate-reducing bacteria by purging nitrogen
作者机构：Research Institute of Petroleum Exploration and DevelopmentPetroChinaBeijing 100083China CAS Key Laboratory of Nuclear Materials and Safety AssessmentInstitute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina School of Materials Science and EngineeringUniversity of Science and Technology of ChinaHefei 230026AnhuiChina
出 版 物：《Journal of Iron and Steel Research(International)》 (钢铁研究学报(英文版))
年 卷 期：2023年第30卷第9期
页 面：1879-1887页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
主 题：Carbon steel Deposit Sulfate-reducing bacteria Nitrogen purging Corrosion mitigation
摘 要：The corrosion behavior of a carbon steel covered by sand deposits in the solution containing sulfate-reducing bacteria(SRB)under nitrogen purging conditions was studied by electrochemical measurements and surface analyses,aiming at clarifying the mitigation effects of nitrogen purging on SRB-involved under-deposit *** electrochemical results show that the variation trend of polarization resistance with immersion time is unchanged,but the corrosion current density is the lowest in the presence of SRB and deposits under nitrogen purging conditions,as compared to that without purging nitrogen,which are confirmed by the cross-sectional corrosion morphology observation after removing the sand ***,it is found that there are no positive synergistic effects between SRB and deposits on corrosion under nitrogen purging conditions,corresponding to the corrosion *** mitigation on corrosion can be attributed to the less amount of SRB-produced H2S exhausted by purging nitrogen,which is supported by X-ray photoelectron spectrometry ***,purging nitrogen to the solution could be a practically effective way to mitigate the corrosion of deposit-covered carbon steels in SRB-containing solutions.
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