Microbiological corrosion of pipeline steel under yield stress in soil environment

Wu, Tangqing; Xu, Jin; Sun, Cheng; Mao, Yan; Yu, Cunming; Ke, Wei

doi:10.1016/j.corsci.2014.07.046

Cited by 103 publications

(36 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Several research studies have shown that microbiological corrosion is one of the causes of failure in pipes buried in the most harmful soils [71][72][73]. It has been quantitatively established that more than 20% of the failures that occur in pipes are related to microorganisms [74,75]. In 2009, a study estimated that this process constituted approximately 20% of corrosion costs to many industrialized countries [76].…”

Section: Bacteriamentioning

confidence: 99%

Methods to Evaluate Corrosion in Buried Steel Structures: A Review

Arriba-Rodriguez

Balsera

Fernández

et al. 2018

Metals

View full text Add to dashboard Cite

Around the world, there are thousands of metal structures completely or partially buried in the soil. The main concern in their design is corrosion. Corrosion is a mechanism that degrades materials and causes structural failures in infrastructures, which can lead to severe effects on the environment and have direct impact on the population health. In addition, corrosion is extremely complex in the underground environment due to the variability of the local conditions. The problem is that there are many methods to its evaluation but none have been clearly established. In order to ensure the useful life of such structures, engineers usually consider an excess thickness that increases the economic cost of manufacturing and does not satisfy the principles of efficiency in the use of resources. In this paper, an extended revision of the existing methods to evaluate corrosion is carried out to optimize the design of buried steel structures according to their service life. Thus, they are classified into two categories depending on the information they provide: qualitative and quantitative methods. As a result, it is concluded that the most exhaustive methodologies for estimating soil corrosion are quantitative methods fed by non-electrochemical data based on experimental studies that measure the mass loss of structures.

show abstract

Section: Bacteriamentioning

confidence: 99%

Methods to Evaluate Corrosion in Buried Steel Structures: A Review

Arriba-Rodriguez

Balsera

Fernández

et al. 2018

Metals

View full text Add to dashboard Cite

show abstract

“…Na qual o módulo da impedância é definido por [27]: (3) Na qual Z' e Z" são as componentes reais e imaginárias da impedância, respectivamente. Na Figura 4(a), é possível observar que em altas frequências, o tiossulfato de sódio levou uma menor resistividade das soluções, em comparação com a solução NS4 padrão (solução 1), isso devido a transferên-cia de elétrons ter sido intensificada na superfície do eletrodo [25], indicando a maior agressividade das soluções 5 a 8.…”

Section: Figuraunclassified

Estudo e proposição de soluções sintéticas de solos para avaliação da corrosividade do aço X65

et al. 2017

View full text Add to dashboard Cite

RESUMOAs estruturas enterradas (tanques, bases de linhas de transmissão e dutos) estão expostas a diferentes tipos de solos e níveis de corrosividade. Neste caso, se torna necessário o estudo de corrosão do aço carbono nestes diferentes tipos de solos. Para estudos em laboratório, utiliza-se a solução NS4 para simular solos sintéticos. No entanto, devido aos diversos tipos de solos, é necessário o desenvolvimento de soluções sintéticas para simular estes solos com diferentes níveis de corrosividade. Assim, o objetivo deste trabalho foi desenvolver soluções sintéticas para uso em laboratório que abranjam uma variedade de tipos de solos com diferentes propriedades físico-químicas. Os ensaios eletroquímicos realizados foram curvas de polarização potenciodinâmicas, impedância eletroquímica e perda de massa. As soluções foram desenvolvidas alterando as concentrações da solução padrão NS4 nas seguintes condições: desaerada, na qual foi adicionado tiossulfato de só-dio para simular o ambiente anaeróbico das bactérias redutoras de sulfato; em condições aeradas para simular solos contaminados com sulfeto de hidrogênio; adicionando cloreto de sódio para simular solos em região costeira e adição de cimento para simular solos anticorrosivos. Os resultados mostraram que o aço carbono apresenta maior taxa de corrosão quando exposto a soluções de cloreto de sódio e tiossulfato. A adição de 5% (m/v) de cimento foi o suficiente para simular solos anticorrosivos, nos quais ocorreu o processo de passivação. Para garantir o processo passivo no metal nas soluções sintéticas com a presença de tiossulfato de sódio foi necessária adição 5% (m/v) de cimento. O processo de passivação estável não foi alcançado nas soluções sintéticas com cloreto de sódio ao se adicionar 5%, 10% e 15% (m/v) de cimento. Palavras-chave:Corrosividade dos solos, soluções sintéticas de solo, cimento, tiossulfato de sódio e cloreto de sódio. ABSTRACTThe buried structures (tanks, bases of line transmissions, pipelines) are commonly exposed to different kind of soils and corrosivity levels. Due to this condition, it is necessary to study the corrosion on the carbon steel on these different environments. In laboratory, the NS4 solution is used to simulate synthetic soils. However, due to different kind of soils, it is necessary to develop synthetic solutions that evaluate these soils and their corrosivity. Therefore, the objective of this work was to develop synthetic solutions for laboratory use that include a large variety of kinds of soil with different physicochemical properties. The performed electrochemical tests were polarization curves, electrochemical impedance and mass loss. The solutions were obtained by altering the concentration of a standard solution of NS4 in these following conditions: in deaerated condition, in which was added sodium thiosulphate to simulate anaerobic environment of sulphate-reducing Autor Responsável: Joseane Moreira Giarola Data de envio:

show abstract

“…The available data showed that SRB may accelerate the growth of SCCs. The activities of SRB induce the initiation of pits, and the applied elastic stress to keep and promote the growth of pits . Premature cracking of cathodically protected pipeline steels has been indicated both in the simulated laboratory environments and by some field failures .…”

Section: Introductionmentioning

confidence: 99%

“…The activities of SRB induce the initiation of pits, and the applied elastic stress to keep and promote the growth of pits . Premature cracking of cathodically protected pipeline steels has been indicated both in the simulated laboratory environments and by some field failures . However, an exact understanding of bacterial activities on the MIC‐assisted cracking under CP has been lacking due to the limited attention paid to this area and the vast majority of research concerns high‐strength steels.…”

Section: Introductionmentioning

confidence: 99%

Sulfate‐reducing bacteria‐assisted hydrogen‐induced stress cracking of 2205 duplex stainless steels

Łabanowski

Rzychoń

Simka

et al. 2019

Materials & Corrosion

View full text Add to dashboard Cite

The paper presents the results of a laboratory investigation of the microbiologically assisted hydrogen‐induced stress cracking (HISC) of 2,205 duplex stainless steel (DSS). The testing of susceptibility toward HISC was performed with two different methods. Precharged in sulfate‐reducing bacteria (SRB), inoculated medium samples were subjected to slow strain‐rate testing in artificial seawater. In situ constant load tests were performed directly in SRB‐inoculated medium under hydrogen charging at 70% of the ultimate tensile strength. Samples tested in the biotic (SRB) conditions showed a considerable loss of ductility as compared to those tested in sterile conditions. Quantitative characteristics of fracture surfaces indicated increased susceptibility to HISC of biotic samples, therefore, suggesting a role of SRB in promoting hydrogen damage of DSS.

show abstract

Microbiological corrosion of pipeline steel under yield stress in soil environment

Cited by 103 publications

References 54 publications

Methods to Evaluate Corrosion in Buried Steel Structures: A Review

Methods to Evaluate Corrosion in Buried Steel Structures: A Review

Estudo e proposição de soluções sintéticas de solos para avaliação da corrosividade do aço X65

Sulfate‐reducing bacteria‐assisted hydrogen‐induced stress cracking of 2205 duplex stainless steels

Contact Info

Product

Resources

About