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Pogrebova, I. S.; Козлова, И. А.; Purish, L. M.; Gerasika, S. E.; Tuovinen, Olli H.

doi:10.1023/a:1015044425411

Cited by 5 publications

(2 citation statements)

References 1 publication

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“…The corrosion process contributes to an increase in the surface layer roughness; for test scheme 6, the maximum increase in R a , R z , R y was obtained (Table 3). This may indicate some manifestations of the biocorrosion process localization, and the formation of micropitting [22].…”

Section: Resultsmentioning

confidence: 96%

Microdefects of Biocorroded Pipe Steel Surfaces and Safety Assessment of Localized Stress Concentrators

Maruschak

Dzyura

Prentkovskis

et al. 2020

Metals

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The effect of sulfate-reducing bacteria (SRB) on the corrosion of steel 20 was investigated. Results demonstrated that the chemical composition of corrosion products, the corrosion rate, and corrosion type were altered due to the adherence of SRB and the subsequent formation of biofilm on the steel 20 surface. The micromechanisms of biocorrosion damage of specimens from pipe steel 20 were quantified on the basis of the microgeometry of the degraded surface and the localization parameters of corrosive stress microconcentrators. Stress concentrators in the vicinity of the micro-cuts, which are the depths of the profilograms, make it possible to evaluate safe (allowable) microcorrosion damage. The proposed approach complements the well-known methods for monitoring biodeterioration of pipe steels. With its help, it was found that a decrease in the corrosion rate of specimens with the addition of an inhibitor does not always clearly indicate its effectiveness. The case where the introduction of an inhibitor led to the destruction of the SRB biofilm on the surface of specimens from steel 20, but caused the activation of local corrosion processes and the formation of a more developed microrelief, is considered. The hollows of such microrelief are potential places of origin of defects, which require additional control.

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Section: Resultsmentioning

confidence: 96%

Microdefects of Biocorroded Pipe Steel Surfaces and Safety Assessment of Localized Stress Concentrators

Maruschak

Dzyura

Prentkovskis

et al. 2020

Metals

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“…For some of them, particularly catapine (alkylbenzylpyridinium chloride), biocide effect on the sulfate-reducing bacteria -the main factor of biocorrosion -has been defined [2]. Antimicrobial effect on the named bacteria was also revealed in derivatives of pyridinium salts [3], derivatives of hydrobromide 4-[(4-chlorophenyl)methyl] pyridine [4]. These facts prove that quaternary pyridinium salts have a great potential in the inhibition of steel biocorrosion.…”

Section: Introductionmentioning

confidence: 99%

Quaternary Pyridinium Salts as Inhibitors of Mild Steel Biocorrosion

Kurmakova¹,

Bondar²,

Polevichenko³

et al. 2017

ChChT

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Abstract.1 A number of new quaternary pyridinium salts with amide fragment and aryl substituents have been obtained, demonstrating the inhibition efficiency of 50.0-97.2 % under the biocorrosion of mild steel, induced with sulfate-reducing bacteria of Desulfovibrio and Desulfomicrobium genera. It has been established that inhibition efficiency of the studied quaternary salts is caused by their effect on microbiological factor.

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