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The effect of a sulphate-reducing bacteria on the rate of corrosion of steel alloys

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dc.contributor.author Shaku, L.
dc.contributor.author Danha, Gwiranai
dc.contributor.author Hlabangana, Nkosikhona
dc.contributor.author Bhero, Shepherd
dc.date.accessioned 2021-09-28T14:11:05Z
dc.date.available 2021-09-28T14:11:05Z
dc.date.issued 2019-08-14
dc.identifier.citation Shaku, L. et al. (2019) The effect of a sulphate-reducing bacteria on the rate of corrosion of steel alloys. Procedia Manufacturing, 35, 513-521.https://doi.org/10.1016/j.promfg.2019.05.073. en_US
dc.identifier.issn 2351-9789
dc.identifier.uri http://repository.biust.ac.bw/handle/123456789/359
dc.description.abstract In this article, we investigate the effect of micro-organisms on the rate of corrosion of stainless steel and mild steel alloys. The three analytical techniques we will employ in measuring the rate of corrosion are the electrochemical impedance spectroscopy, cyclic polarization and the mass loss method. The test material used is the 316L stainless steel and the mild steel coupons. The microorganism we are going to use for this investigation is the sulphate-reducing bacteria (SRB). The scope of the study will cover the cultivation of the micro-organism, cell count, electrochemical testing, cyclic polarization testing, analysis of corrosion product, mass loss and the pitting morphology consistent with the microbiologically induced corrosion mechanism. Our results show that the chemical composition of the mild steel and stainless steel test material conformed to SAE1020 and Type 316L stainless steel respectively. We also found that the corrosion rate of mild steel in both biotic and abiotic systems was significantly higher than that of the 316L stainless steel. The biotic system was more corrosive for both the mild steel and the 316L stainless steel. The biotic system showed a substantial corrosion effect in two days while the abiotic system showed the same effect after seven days. The cell count procedure confirmed the presence of sulphate-reducing bacteria throughout the test. en_US
dc.language.iso en en_US
dc.publisher Elsevier B.V. en_US
dc.subject Steels en_US
dc.subject Sulphate-reducing bacteria (SRB) en_US
dc.subject Microbiologically induced corrosion mechanism en_US
dc.title The effect of a sulphate-reducing bacteria on the rate of corrosion of steel alloys en_US
dc.description.level phd en_US
dc.description.accessibility unrestricted en_US
dc.description.department cme en_US


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