Effect of Urea on Microbiologically Induced Corrosion of Carbon Steel in Soil

Sun, Chen-Nan; Li, Ximing; Xu, Jin; Maocheng, Yan; Wang, Fuhui; Wang, Zhenyao

doi:10.3866/pku.whxb201208243

Cited by 8 publications

(1 citation statement)

References 17 publications

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“…All OCPs distribute in a narrow range from −0.75 to −0.70 V vs. SCE. The specimens in the SRB-inoculated soil solution display a relatively negative OCP under the same level stresses, which was a common phenomenon for carbon steel in near-neutral pH soil environments [32]. According to the mechano-chemical theory by Gutman [33,34], the electrode potential of metals is affected by applied stress, and a tensile stress (Δ P > 0) would decrease the electrode potential and enhance the corrosion tendency of metals.…”

Section: Resultsmentioning

confidence: 99%

A study on bacteria-assisted cracking of X80 pipeline steel in soil environment

Sun

et al. 2018

Corrosion Engineering, Science and Technology

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In the paper, bacteria-assisted cracking by sulphate-reducing bacteria (SRB) of X80 pipeline steel in a meadow soil solution was studied under different applied stresses by electrochemical impedance spectroscopy, linear polarisation resistance and scanning electron microscope. The obtained results indicated that the physiological activity of SRB and the applied stresses not only play individual roles in corrosion of the steel, but also had intense synergistic effects in promoting the corrosion process. In the SRB-inoculated soil solution, the number, average length and width of micro-cracks increase to a certain extent. Under the combined actions of SRB and plastic stress, localised corrosion may not only extend to steel matrix but also to lateral direction. The generation processes of bacteria-assisted cracking were discussed in the paper.

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Section: Resultsmentioning

confidence: 99%

A study on bacteria-assisted cracking of X80 pipeline steel in soil environment

Sun

et al. 2018

Corrosion Engineering, Science and Technology

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Microbiologically Induced Corrosion of X80 Pipeline Steel in a Near-Neutral pH Soil Solution

Mao

Zeng³

et al. 2014

Acta Metall. Sin. (Engl. Lett.)

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MIC of X80 pipeline steel in a near-neutral pH soil solution in the presence and absence of sulfate-reducing bacteria (SRB) was monitored by electrochemical techniques and microbiological tests. The results show that soil solution is more close to the complex soil environment around pipeline. The activity of SRB leads to the shift of the phase response to low frequency, the decrease of electrolyte resistance and the alteration of dielectric constant of the film. Both the activity and metabolite of SRB influence the corrosion behavior of the steel. The steel surface undergoes localized attack in the SRB-inoculated soil solution, whereas only slight uniform corrosion occurs in the sterile soil solution.

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Synergistic effect of sulfate-reducing bacteria and elastic stress on corrosion of X80 steel in soil solution

Mao

et al. 2014

Corrosion Science

101

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Effect of Urea on Microbiologically Induced Corrosion of Carbon Steel in Soil

Cited by 8 publications

References 17 publications

A study on bacteria-assisted cracking of X80 pipeline steel in soil environment

A study on bacteria-assisted cracking of X80 pipeline steel in soil environment

Microbiologically Induced Corrosion of X80 Pipeline Steel in a Near-Neutral pH Soil Solution

Synergistic effect of sulfate-reducing bacteria and elastic stress on corrosion of X80 steel in soil solution

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