摘要
通过利用线性极化曲线,交流阻抗技术(EIS),并结合使用扫描电子显微镜观察研究了不同温度下SRB对X80管线钢在大港土壤模拟溶液中的腐蚀行为的影响,实验结果表明:SRB会加剧X80管线钢在大港土壤溶液中的腐蚀,当SRB活性受不同温度影响时,其对X80管线钢腐蚀行为产生不同影响。当外界环境温度为30℃时,SRB活性较强,生物膜中细胞密度高,其致密性增加,加速了金属的电化学腐蚀速率。当外界环境温度为50℃时,SRB的活性较低,在金属表面形成的生物膜致密性较差,此时在含SRB模拟溶液与无菌模拟溶液中,X80管线钢所呈现出的电化学腐蚀速率基本一致,且小于30℃时含SRB模拟溶液中的腐蚀速率。
The effect of SRB on the corrosion behavior of X80 pipeline steel in Dagang soil simulated solution at different temperatures was studied by using linear polarization curve, electrochemical impedance spectroscopy(EIS) and scanning electron microscope. The experimental results show that SRB can aggravate the corrosion of X80 pipeline steel in Dagang soil simulation solution. And it has different effects on it when the SRB activity is affected by different temperatures. When the ambient temperature is 30 ℃, the SRB activity is strong, the cell density in the biofilm is high, and its compactness increases, which accelerates the electrochemical corrosion rate of metals. When the ambient temperature is 50 ℃, the activity of SRB is low and the compactness of the biofilm formed on the metal surface is poor. In this situation, the electrochemical corrosion rate of X80 pipeline steel is basically same as that in aseptic soil simulated solution. And the corrosion rate in simulated solution containing SRB is less than 30 ℃.
作者
李昊宸
谢飞
齐季
刘佳琪
谢冰晰
刘晋
LI Hao-chen;XIE Fei;QI Ji;LIU Jia-qi;XIE Bing-xi;LIU Jin(School of Petroleum Engineering,Liaoning Shihua University,Fushun 113001,Uaoning,China;Drilling and Production Technology Research Institute,China Petroleum Liaohe Oilfield Company,Panjin 142010,Liaoning,China;The Refinery of Jilin Petrochemical Company,Jilin 132000,Jilin,China)
出处
《钢铁研究学报》
CAS
CSCD
北大核心
2020年第10期900-908,共9页
Journal of Iron and Steel Research
基金
国家自然科学基金资助项目(51604150)
辽宁省“兴辽英才计划”资助项目(XLYC1807260)
辽宁省自然科学基金指导计划资助项目(20180550669)。
