Analytical Characterisation of Material Corrosion by Biofilms

Dang, Yen T.H.; Power, Aoife; Cozzolino, Daniel; Dinh, Khuong Ba; Ha, Binh Son; Kolobaric, Adam; Vongsvivut, Jitraporn; Truong, Vi Khanh; Chapman, James

doi:10.1007/s40735-022-00648-2

Cited by 4 publications

(1 citation statement)

References 146 publications

(146 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Corrosion is particularly problematic in metals and alloys and is a significant cause of failures in many engineering applications [8]. Dang et al [9] Bacteria, algae, and fungi quickly colonise most abiotic surfaces of a substance, accelerating material breakdown. The interaction of microorganisms and their metabolic by-products, such as exopolymeric substances (EPS), with an abiotic surface, is called biocorrosion or microbially influenced corrosion (MIC).…”

Section: Introductionmentioning

confidence: 99%

Investigating Corrosion and Surface Hardness of Al6061 in Machining Fluids with Variable CNT Concentrations

Okokpujie,

Nakpoberuo,

Emojeya

et al. 2024

RCMA

View full text Add to dashboard Cite

This project investigates the corrosion tendency of various machining fluids on Al6061 alloy for a sustainable cutting process. Also, the surface of the machining workpiece was analysed to understand the effect of the carbon nanotubes (CNTs) on the surface morphology that assists the cutting conversion of the sliding friction to the rolling process. The study used a two-step process to create machining fluid with CNT nanoparticles at different percentage concentrations. The soluble oil (sample B1), mineral oil (sample B2), 0.2-g/l-CNTs nano-mineral machining fluid (sample B3), 0.4-g/l-CNTs nano-mineral machining fluid (sample B4), and 0.6-g/l-CNTs nano-mineral machining fluid (sample 5) makes up the corrosion study medium. The corrosion study was conducted using polarisation resistance and potentiodynamic corrosion techniques. After the corrosion study, the Vickers micro-hardness machine was employed to evaluate the surface hardness of the normal face region subjected to the corrosion study. The SEM and EDS were also used to investigate the microstructure and elemental composition of the machining fluid impacts on the Al 6061 alloy. The results show that the soluble oil has a high corrosion rate of 0.03590591 (mm/year), with a list polarisation resistance rate of 8,432.83 (Ω) compared to the other machining fluid employed in this study. Furthermore, the 0.6-g/l-CNTs nano-mineral machining fluid has the lowest corrosion rate of 0.0013197 (mm/year) and the highest polarisation resistance of 32,941.67 (Ω). The 0.6-g/l-CNTs presence in the mineral oil increases the rheological and tribological properties, which results in an outstanding performance in the corrosion study. Furthermore, the CNTs hardened the surface of the workpiece due to the carbon element deposition during the implementation of the cutting fluid.

show abstract

Section: Introductionmentioning

confidence: 99%

Investigating Corrosion and Surface Hardness of Al6061 in Machining Fluids with Variable CNT Concentrations

Okokpujie,

Nakpoberuo,

Emojeya

et al. 2024

RCMA

View full text Add to dashboard Cite

show abstract

Microbiologically influenced corrosion—more than just microorganisms

Knisz

Eckert²,

Gieg

et al. 2023

FEMS Microbiology Reviews

View full text Add to dashboard Cite

Microbiologically influenced corrosion (MIC) is a phenomenon of increasing concern which affects various materials and sectors of society. MIC describes the effects, often negative, that a material can experience due to the presence of microorganisms. Unfortunately, although several research groups and industrial actors worldwide have already addressed MIC, discussions are fragmented, while information sharing and willingness to reach out to other disciplines is limited. A truly interdisciplinary approach, that would be logical for this material/biology/chemistry-related challenge, is rarely taken. In this review we highlight critical non-biological aspects of MIC that can sometimes be overlooked by microbiologists working on MIC but are highly relevant for an overall understanding of this phenomenon. Here, we identify gaps, methods and approaches to help solve MIC related challenges, with an emphasis on the MIC of metals. We also discuss the application of existing tools and approaches for managing MIC and propose ideas to promote an improved understanding of MIC. Furthermore, we highlight areas where the insights and expertise of microbiologists are needed to help progress this field.

show abstract

Micron-Scale Biogeography of Seawater Biofilm Colonies at Submersed Solid Substrata Affected by Organic Matter and Microbiome Transformation in the Baltic Sea

et al. 2022

View full text Add to dashboard Cite

The aim of this research was to determine temporal and spatial evolution of biofilm architecture formed at model solid substrata submersed in Baltic sea coastal waters in relation to organic matter transformation along a one-year period. Several materials (metals, glass, plastics) were deployed for a certain time, and the collected biofilm-covered samples were studied with a confocal microscopy technique using the advanced programs of image analysis. The geometric and structural biofilm characteristics: biovolume, coverage fraction, mean thickness, spatial heterogeneity, roughness, aggregation coefficient, etc., turned out to evolve in relation to organic matter transformation trends, trophic water status, microbiome evolution, and biofilm micro-colony transition from the heterotrophic community (mostly bacteria) to autotrophic (diatom-dominated) systems. The biofilm morphology parameters allowed the substratum roughness, surface wettability, chromatic organisms colony adaptation to substrata, and quorum sensing or cell to cell signaling effects to be quantitatively evaluated. In addition to the previous work, the structural biofilm parameters could become further novel trophic state indicators.

show abstract

Analytical Characterisation of Material Corrosion by Biofilms

Cited by 4 publications

References 146 publications

Investigating Corrosion and Surface Hardness of Al6061 in Machining Fluids with Variable CNT Concentrations

Investigating Corrosion and Surface Hardness of Al6061 in Machining Fluids with Variable CNT Concentrations

Microbiologically influenced corrosion—more than just microorganisms

Micron-Scale Biogeography of Seawater Biofilm Colonies at Submersed Solid Substrata Affected by Organic Matter and Microbiome Transformation in the Baltic Sea

Contact Info

Product

Resources

About