A Brief Insight into Microbial Corrosion and its Mitigation with Eco-friendly Inhibitors

Lavanya, M.

doi:10.1007/s40735-021-00563-y

Cited by 30 publications

(16 citation statements)

References 77 publications

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“…The conditions present in the oral cavity environment (humidity, temperature, and nutrients) can favor the formation of microbial biofilms and microorganism differentiation. Nevertheless, it is known that bacteria can adhere on the surface of the dental alloys, generating metabolites as sulfides or inorganic and organic acids [39], that can influence the corrosion behavior of the alloys in long-term usage by changing oxygen concentration, salinity, and acidity of the medium [40,41]. Among the factors that can influence the corrosion resistance of an alloy, the material structure, in terms of single-or multi-phase, is of major importance because the type, concentration, and combination of the alloying elements dictate the material behavior [42].…”

Section: Discussionmentioning

confidence: 99%

Experimental Study Regarding the Behavior at Different pH of Two Types of Co-Cr Alloys Used for Prosthetic Restorations

et al. 2021

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Cobalt-chromium (Co-Cr) alloys are widely utilized in dentistry. The salivary pH is a significant factor, which affects the characteristics and the behavior of dental alloys through corrosion. This study aimed to evaluate the corrosion behavior in artificial saliva with different pH values (3, 5.7, and 7.6) of two commercial Co-Cr dental alloys manufactured by casting and by milling. Corrosion resistance was determined by the polarization resistance technique, and the tests were carried out at 37 ± 1 °C, in Carter Brugirard artificial saliva. After the electrochemical parameters, it can be stated that the cast Co-Cr alloy has the lowest corrosion current density, the highest polarization resistance, and the lowest speed of corrosion in artificial saliva with pH = 7.6. In the case of milled Co-Cr alloy, the same behavior was observed, but in artificial saliva with pH = 5.7, it recorded the most electropositive values of open circuit potential and corrosion potential. Although both cast and milled Co-Cr alloys presented a poorer corrosion resistance in artificial saliva with a more acidic pH value, the milled Co-Cr alloy had better corrosion behavior, making this alloy a better option for the prosthetic treatment of patients suffering from GERD.

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Section: Discussionmentioning

confidence: 99%

Experimental Study Regarding the Behavior at Different pH of Two Types of Co-Cr Alloys Used for Prosthetic Restorations

et al. 2021

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“…As particular microbes interact with building materials and other constituents, structural, mechanical and even aesthetic properties are often compromised. Microbiologically Influenced Corrosion (MIC) is considered to be a significant threat to mechanical integrity in industries such as water distribution, oil and gas production and processing, and many others (Guo et al, 2018;Jia et al, 2019;Stamps et al, 2020;Lavanya, 2021;Lou et al, 2021;Zaidi et al, 2021). The global cost of corrosion in 2015 was estimated to be ~2.5 trillion dollars and has been continuously increasing (Koch et al, 2016;Ma et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

“…The global cost of corrosion in 2015 was estimated to be ~2.5 trillion dollars and has been continuously increasing (Koch et al, 2016;Ma et al, 2020). It has been calculated that approximately 20% of the cost of all failures caused by corrosion are consequence of microbial activity (Maxwell et al, 2004;Fatah et al, 2013;Sachan and Singh, 2020;Lavanya, 2021). Still, analysts argue that many MICrelated failures remain unreported due to limitations in field diagnostics and thus the cost of their environmental impact might also be underestimated (Brauer et al, 2015;Guo et al, 2018;Inaba et al, 2019;Jia et al, 2019;Liu et al, 2019;Little et al, 2020;Shi et al, 2020;Stamps et al, 2020;Chatterjee et al, 2021;Kleinbub et al, 2021;Lou et al, 2021;Omar et al, 2021;Zaidi et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

“…MIC was first described over 100 years ago (Gaines, 1910). Since then, numerous studies have been dedicated to unraveling its microbial, biochemical and electrochemical mechanisms (Skovhus et al, 2017;Emerson, 2018;Jia et al, 2019;Lekbach et al, 2021). Although there is still plenty to be discovered, it is clear that microbes are most deleterious to a system or a process when attached to metallic surfaces while associated into biofilms.…”

Section: Introductionmentioning

confidence: 99%

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Microbiologically influenced corrosion: The gap in the field

Puentes-Cala¹,

Tapia-Perdomo²,

Espinosa-Valbuena³

et al. 2022

Front. Environ. Sci.

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Microorganisms have evolved to inhabit virtually all environments on the planet, from oceanic hot-seeps to pipelines transporting crude and refined hydrocarbons. Often microbial colonization of man-made structures results in the reduction of their service life requiring preemptive or corrective human intervention. Microbiologically Influenced Corrosion (MIC) is caused by a set of intricate bioelectrochemical interactions between a diverse group of microorganisms and metallic surfaces. The complexity of MIC microbiomes and their mechanisms as well as the logistics constraints of industrial facilities are factors to consider when choosing suitable analytical methods for MIC monitoring. These generally reflect only a partial view of the phenomenon and in consequence, might lead to ineffective mitigation measures. This paper acknowledges the discrepancies between the fieldwork for MIC monitoring and the currently available technological advancements. It also highlights the most pressing issues that operators have in the field in light of the diversity of the microbial key players present in corrosive microbiomes. Finally, it compiles and outlines a strategy for the integration of novel molecular approaches aiming for a practical and accurate assessment of the microbial threat.

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“…Microbial induced corrosion (MIC) incorporates a wide range of confluence where various microorganisms (Fungi, Bacteria, Micro Algae, Archea) start, help, and speed up the corrosion of metals and eventually cause the failure of components thereby [1]. Microbialinduced corrosion (MIC) is the leading cause of material failure, accounting for 20% of all corrosion-related losses, resulting in losses amounting to billions of dollars annually [2].…”

Section: Introductionmentioning

confidence: 99%

Microbial induced corrosion in Zn-Ni-Cu and Zn-Ni-Cu-TiB2 coated mild steel

Ali

Ahmad

2022

Preprint

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Zn-Ni-Cu and Zn-Ni-Cu-TiB 2 coatings were coated on a mild steel substrate utilizing a high-velocity oxy-fuel (HVOF) thermal spray process. A field emission scanning electron microscope (FESEM) was used to examine the microstructural characteristics of both coated and uncoated mild steel samples. Immersion tests following ASTM G-31, ASTM G1-03, standards were performed in Escherichia Coli (E-Coli) bacteria medium for 28 days (672 hrs), the weight loss of uncoated mild steel specimen was 982.5 mg, for Zn-Ni-Cu coated mild steel it was 116.5 mg, and for Zn-Ni-Cu-TiB 2 coated mild steel it was 115.1 mg. The uncoated mild steel specimen showed well-developed bacterial colonies on the surface and floating colonies of bacteria were observed in the medium solution. The coatings performed well and limited the growth of bacteria. Very few colonies of bacteria could be seen in both coated sample mediums. The presence of Zn and Cu prevented the bacterial attachment with coated surface and hence prevented the underlying substrate from being corroded substantially. Tafel polarization and electrochemical impedance spectroscopy (EIS) in Escherichia Coli (E-Coli) medium confirmed that coated samples were more corrosion resistant than uncoated mild steel specimens because the corrosion potential (Ecorr) values of both coated samples were higher than uncoated mild steel suggesting better anodic protection. The corrosion current density (Icorr) of both coated samples (Zn-Ni-Cu and Zn-Ni-Cu-TiB 2 ) were lower than uncoated mild steel specimens also inferring better performance of a coating in microbial induced corrosive environments.

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A Brief Insight into Microbial Corrosion and its Mitigation with Eco-friendly Inhibitors

Cited by 30 publications

References 77 publications

Experimental Study Regarding the Behavior at Different pH of Two Types of Co-Cr Alloys Used for Prosthetic Restorations

Experimental Study Regarding the Behavior at Different pH of Two Types of Co-Cr Alloys Used for Prosthetic Restorations

Microbiologically influenced corrosion: The gap in the field

Microbial induced corrosion in Zn-Ni-Cu and Zn-Ni-Cu-TiB2 coated mild steel

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