SRB-mediated corrosion of marine submerged AISI 1020 steel under impressed current cathodic protection

Liduino, Vitor Silva; Galvão, Mariana; Brasil, Simone L. D. C.; Sérvulo, Eliana Flávia Camporese

doi:10.1016/j.colsurfb.2021.111701

Cited by 33 publications

(14 citation statements)

References 28 publications

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“…The high number of HAB in the seawater may have provided a favorable environment to accelerate the corrosive process of the HAZ surfaces. Previous studies reported similar HAB counting for seawater samples from different points of the Guanabara Bay [7,19,26,47]. Most of these bacteria are described as pioneer colonizers during bio lm formation over surfaces by producing extracellular polymeric substances (EPS).…”

Section: Discussionmentioning

confidence: 83%

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Corrosion of Weld Heat-Affected Zones Submersed in Seawater with Indigenous Microorganisms

et al. 2023

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The corrosion behaviors of different weld heat-affected zones (HAZs) were investigated, comprising an API 5L X65 steel immersed in seawater with an abundant native microbial community. Before tests, HAZ physical simulations were performed at the peak temperatures of 700°C, 860°C, 1000°C, and 1350°C. Throughout 14 days of immersion, various planktonic bacterial groups associated with microbiologically in uenced corrosion were metabolically active in the seawater. Desulfovibrio members were present in a considerable number of OTUs. Scanning electron microscopy showed an intense microbial adhesion and corrosion product deposits in all HAZ sub-regions and the control base metal coupon (BM). The electrochemical tests revealed that the corrosion behavior of all HAZ sub-regions and BM were indistinguishable. However, topography analysis showed different behaviors of pitting corrosion. The results revealed that the pitting resistance of the microstructure composed of cementite grains (700°C HAZ) was superior to that of other HAZ sub-regions. On the other hand, the microstructure composed of martensite and austenite grains (860°C HAZ) exhibited the worst pitting resistance of the weld joint, leading to a maximum pit penetration of 2.3 times greater than that pit on the BM. The changes in the HAZ sub-region sensitivity to pitting corrosion were attributed to variations in the microstructural composition.

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Section: Discussionmentioning

confidence: 83%

“…This phenomenon is known as microbiologically in uenced corrosion (MIC) or usually biocorrosion. Many theories and mechanisms have been proposed to explain MIC [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Corrosion of Weld Heat-Affected Zones Submersed in Seawater with Indigenous Microorganisms

et al. 2023

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“…Metallic material inevitably come into contact with corrosive media in the environment during service and are susceptible to corrosion or aging, which can cause structural and performance damage (Jeong et al , 2017; Lin et al , 2021a, 2021b; Choi et al , 2019; Calabrese et al , 2019; Andre et al , 2019). To mitigate the damage caused by corrosion, various methods have been developed to protect metal materials, such as alloying, electrochemical protection and corrosion inhibitors (Fu and Cui, 2022; Liu et al , 2020; Liduino et al , 2021; Ma et al , 2020; Obot et al , 2019; Cui et al , 2019). While these methods can work well for conservation, they also have some shortcomings.…”

Section: Introductionmentioning

confidence: 99%

Effect of high-temperature mechanochemistry method modified TiO₂ on the dispersibility and corrosion resistance of TiO₂-epoxy coatings

Liu,

Zhang,

Wang

et al. 2023

ACMM

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Purpose The purpose of this paper is to enhance the compatibility of titanium dioxide in epoxy resins and thus the corrosion resistance of the coatings. Design/methodology/approach In this work, TiO2 was modified by the mechanochemistry method where mechanical energy was combined with thermal energy to complete the modification. The stability of modified TiO2 in epoxy was analyzed by sedimentation experiment. The modified TiO2-epoxy coating was prepared, and the corrosion resistance of the coating was analyzed by open circuit potential, electrochemical impedance spectroscopy and neutral salt spray test. Findings High-temperature mechanical modification can improve the compatibility of TiO2 in epoxy resin. At the same time, the modified TiO2-epoxy coating showed better corrosion resistance. Compared to the unmodified TiO2-epoxy coating, the coating improved the dry adhesion force by 61.7% and the adhesion drop by 33.3%. After 2,300 h of immersion in 3.5 Wt.% NaCl solution, the coating resistance of the modified TiO2 coating was enhanced by nearly two orders of magnitude compared to the unmodified coating. Originality/value The authors have grafted epoxy molecules onto TiO2 surfaces using a high-temperature mechanical force modification method. The compatibility of TiO2 with epoxy resin is enhanced, resulting in improved adhesion of the coating to the substrate and corrosion resistance of the coating.

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“…Adhesion of microorganisms to the pipe surface is capable of accumulating a community of bacteria, generating a layer of biofilm [22,24]. The biofilm is highly adapted for life in microbial communities by means of self-produced extra polymeric substances (EPS) [25,26], affecting corrosion of the steels [27][28][29][30]. The corrosion products are usually mixed with biofilm, especially in a TEL with a limited volume of solution.…”

Section: Introductionmentioning

confidence: 99%

Topographical profiles and mechanical property of corrosion product films on a pipeline steel in Desulfovibrio vulgaris-containing thin electrolyte layer characterised by atomic force microscopy

Wei,

Xu,

Sun

et al. 2023

Corrosion Engineering, Science and Technology: The Internationa

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Internal corrosion of wet gas pipelines usually occurs in thin layers of water condensate with dissolved gases such as CO 2 , where a bacterial community can grow to cause microbiological corrosion. In this work, surface films generated during corrosion of an X52 pipeline steel under a CO 2 -containing thin electrolyte layer (TEL) in the absence and presence of Desulfovibrio vulgaris bacteria were characterised by atomic force microscopy. The film generated in the Desulfovibrio vulgaris-containing TEL, i.e. a mixture of FeS, FeCO 3 and biopolymers, as compared with the film generated in the sterile TEL (i.e. FeCO 3 -dominant corrosion products), is topographically less compact and softer, with a reduced elastic modulus. After 7 days of immersion, the elastic modulus of the surface films generated in the sterile and D. vulgaris-containing TELs are 11.81 and 6.79 GPa, respectively.

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SRB-mediated corrosion of marine submerged AISI 1020 steel under impressed current cathodic protection

Cited by 33 publications

References 28 publications

Corrosion of Weld Heat-Affected Zones Submersed in Seawater with Indigenous Microorganisms

Corrosion of Weld Heat-Affected Zones Submersed in Seawater with Indigenous Microorganisms

Effect of high-temperature mechanochemistry method modified TiO₂ on the dispersibility and corrosion resistance of TiO₂-epoxy coatings

Topographical profiles and mechanical property of corrosion product films on a pipeline steel in Desulfovibrio vulgaris-containing thin electrolyte layer characterised by atomic force microscopy

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SRB-mediated corrosion of marine submerged AISI 1020 steel under impressed current cathodic protection

Cited by 33 publications

References 28 publications

Corrosion of Weld Heat-Affected Zones Submersed in Seawater with Indigenous Microorganisms

Corrosion of Weld Heat-Affected Zones Submersed in Seawater with Indigenous Microorganisms

Effect of high-temperature mechanochemistry method modified TiO2 on the dispersibility and corrosion resistance of TiO2-epoxy coatings

Topographical profiles and mechanical property of corrosion product films on a pipeline steel in Desulfovibrio vulgaris-containing thin electrolyte layer characterised by atomic force microscopy

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Effect of high-temperature mechanochemistry method modified TiO₂ on the dispersibility and corrosion resistance of TiO₂-epoxy coatings