Synergistic effect of sulphate-reducing bacteria and external tensile stress on the corrosion behaviour of X80 pipeline steel in neutral soil environment

2018 ◽  
Vol 91 ◽  
pp. 382-396 ◽  
Author(s):  
Fei Xie ◽  
Xue Li ◽  
Dan Wang ◽  
Ming Wu ◽  
Dongxu Sun
Keyword(s):  
Synergistic Effect ◽  
Tensile Stress ◽  
Corrosion Behaviour ◽  
Pipeline Steel ◽  
Soil Environment ◽  
X80 Pipeline Steel ◽  
Sulphate Reducing Bacteria ◽  
Neutral Soil ◽  
Reducing Bacteria

Effect of interfacial film on the corrosion behaviour of X80 pipeline steel in a neutral soil environment containing sulphate-reducing bacteria

2017 ◽  
Vol 35 (6) ◽  
pp. 445-453 ◽  
Author(s):  
Dan Wang ◽  
Fei Xie ◽  
Xue Li ◽  
Xingfa Wang ◽  
Jiaqi Liu ◽  
...  
Keyword(s):  
Corrosion Product ◽  
Pipeline Steel ◽  
Soil Environment ◽  
X80 Pipeline Steel ◽  
Interfacial Film ◽  
Corrosion Product Film ◽  
Product Film ◽  
Neutral Soil ◽  
X80 Steel ◽  
Reducing Bacteria

AbstractX80 pipeline steel is inevitably corroded by sulphate-reducing bacteria (SRB) in soil. Corrosion-induced damage to the pipeline steel could result in serious consequences. Studies have shown the critical role of interfacial film in SRB-induced corrosion. However, the specific effect of interfacial film was not examined. The effect of film on the corrosion of X80 steel in neutral soil environment was determined using scanning electron microscopy, energy-dispersive spectroscopy, and electrochemical impedance spectroscopy. The structure and electrochemical characteristics of the surface film of X80 steel were examined in the presence of SRB in Shenyang soil. The results showed that, at the beginning of immersion (14 h), the steel surface mainly adsorbed the SRB biofilm, and the biofilm slowed down the corrosion reaction. A small amount of the biofilm and corrosion product film was observed on the electrode surface after immersion for 14–48 h. The corrosion product film destroyed the protection of the biofilm, increasing corrosion. After immersion for 48 h, the corrosion product contents and polarisation resistance increased. After immersion for 240 h, a dense corrosion product film formed on the sample surface, showing the least corrosion. The protective effect of corrosion products on X80 steel was much greater than that of the biofilm.

scholarly journals Effect of Sulfate-Reducing Bacteria (SRB) on the Corrosion of Buried Pipe Steel in Acidic Soil Solution

Coatings ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 625
Author(s):  
Lijuan Chen ◽  
Bo Wei ◽  
Xianghong Xu
Keyword(s):  
Soil Solution ◽  
Steel Surface ◽  
Pipeline Steel ◽  
Electrochemical Techniques ◽  
Sulfate Reducing Bacteria ◽  
Acidic Soil ◽  
Microbiologically Influenced Corrosion ◽  
Soil Environment ◽  
Sulfate Reducing ◽  
Reducing Bacteria

The influence of sulfate-reducing bacteria (SRB) on the corrosion behaviors of X80 pipeline steel was investigated in a soil environment by electrochemical techniques and surface analysis. It was found that SRB grew well in the acidic soil environment and further attached to the coupon surface, resulting in microbiologically influenced corrosion (MIC) of the steel. The corrosion process of X80 steel was significantly affected by the SRB biofilm on the steel surface. Steel corrosion was inhibited by the highly bioactive SRB biofilm at the early stage of the experiment, while SRB can accelerate the corrosion of steel at the later stage of the experiment. The steel surface suffered severe pitting corrosion in the SRB-containing soil solution.

Corrosion effect of Bacillus cereus on X80 pipeline steel in a Beijing soil environment

2018 ◽  
Vol 121 ◽  
pp. 18-26 ◽  
Author(s):  
Hongxia Wan ◽  
Dongdong Song ◽  
Dawei Zhang ◽  
Cuiwei Du ◽  
Dake Xu ◽  
...  
Keyword(s):  
Bacillus Cereus ◽  
Pipeline Steel ◽  
Soil Environment ◽  
X80 Pipeline Steel ◽  
Corrosion Effect
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