Dual-Function Hybrid Coatings Based on Polytetrafluoroethylene and Cu2O for Anti-Biocorrosion and Anti-Wear Applications DOI Open Access
Guohui Li, Huan Li,

Yongkun Xu

et al.

Coatings, Journal Year: 2024, Volume and Issue: 14(5), P. 592 - 592

Published: May 9, 2024

Corrosion and wear issues of motion components exposed to water-based corrosion mediums, e.g., naval vessels oil extraction equipment, pose challenges for the lifespan reliability systems. In this work, epoxy-based coatings modified with polytetrafluoroethylene (PTFE) cuprous oxide (Cu2O) nanoparticles were prepared. The anti-corrosion performance was comparatively investigated by electrical impedance spectroscopy Tafel tests in sterile sulphate-reducing bacteria (SRB) mediums. Moreover, tribological behaviors examined under water lubrication conditions. Our results demonstrate that epoxy lower significantly current density icorr charge transfer resistance double layer Rct carbon steel substrate. Interestingly, hybrid filled both PTFE Cu2O exhibit excellent anti-wear performance. After being immersed SRB medium 18 days, pure EP coating are 1.10 × 10−7 Amp/cm2 0.3 Amp/cm2, values 1.04 103 Ω·cm2 3.87 Ω·cm2, respectively. A solid tribofilm forms on stainless counterface sliding against coating, which is surmised be essential low friction coefficients wear. present work paves a route formulating dual-function anti-biocorrosion anti-wear.

Language: Английский

Role of crevice size induced microenvironment variation within the gap in initiating crevice corrosion of 201 stainless steel DOI Creative Commons
Hongliang Ge,

Yi-Han Bai,

Hang Zhang

et al.

Frontiers in Materials, Journal Year: 2025, Volume and Issue: 11

Published: Jan. 17, 2025

The effects of the real-time changes in microenvironment within crevice caused by change size on induction corrosion 201 stainless steel (201-SS) 1 M (pH = 4.00) NaCl solution were evaluated using conventional methods and scanning electrochemical microscopy (SECM) containing potentiometric probes. Results show that a decrease pH an increase Cl − concentration gap are pivotal determinants initiation. A narrower creates more aggressive corrosive environment. After immersion for 48 h, corresponding values at mouths with widths 100, 250, 400 550 μm dropped to 1.64, 2.26, 2.73 2.88, respectively. affects accumulation rate erosive ions initiation time pits crevice, through volume diffusion effect. coupling effect value chloride is main driver negative shift open circuit potential (OCP) 201-SS.

Language: Английский

Citations

0
Indicators of the Microbial Corrosion of Steel Induced by Sulfate-Reducing Bacteria Under the Influence of Certain Drugs DOI Creative Commons
Наталія Ткачук, Любов Зелена,

Yaroslav Novikov

et al.

Microbiology Research, Journal Year: 2025, Volume and Issue: 16(1), P. 21 - 21

Published: Jan. 16, 2025

Microorganisms cause microbiologically influenced corrosion, for the prevention of which bactericide inhibitors are used. The aim work was to study in vitro sensitivity SRB Desulfovibrio oryzae NUChC SRB1 different concentrations dimethyl sulfoxide (DMSO), and evaluate indicators microbial corrosion steel induced by this bacterium presence pharmaceutical drugs DMSO paracetamol. D. 1–100% (v/v) studied via dilution method Postgate’s “C” liquid medium. activity against 3 investigated under paracetamol treatment at a final concentration 45% 0.2% (w/v), respectively, according ability bacteria form biofilm on surface samples (via crystal violet method) effect rate gravimetric method). It revealed that affected exhibited bactericidal properties (at range 10–100%, v/v) antibiofilm 45%, v/v). Despite its confirmed reduction bacterial mass, anticorrosion features were not observed model 35-day conditions an anaerobic environment with sulfate reduction. Paracetamol (0.2%, w/v) did affect formation these conditions, significantly contributed increase steel. prospect further research is assess influence compounds found wastewater, clarify possible additional causes damage equipment plants. Further should also be directed investigating antimicrobial complexes DMSO, considered as ecological solution problem prevention.

Language: Английский

Citations

0
Toward simulating offshore oilfield conditions: insights into microbiologically influenced corrosion from a dual anaerobic biofilm reactor DOI Creative Commons
Liam Jones, Maria Salta, Torben Lund Skovhus

et al.

Applied and Environmental Microbiology, Journal Year: 2025, Volume and Issue: unknown

Published: March 4, 2025

ABSTRACT Oilfield systems are a multifaceted ecological niche, which consistently experiences microbiologically influenced corrosion. However, simulating the environmental conditions of an offshore system within laboratory is notoriously difficult. A novel dual anaerobic biofilm reactor protocol allowed complex mixed-species marine to be studied. Interestingly, electroactive corrosive bacteria and fermentative growth was supported microenvironment. Critically, biotic condition exhibited pits with greater average area, characteristic This research seeks bridge gap between experimental real-world scenarios, ultimately enhancing reliability management strategies in industry. IMPORTANCE It becoming more widely understood that any investigation corrosion requires multidisciplinary focus on multiple lines evidence. Although there numerous standards available guide specific types testing, none integrating testing. By developing model study biofilms, insights into different abiotic mechanisms under relevant can gained. Using evidence gain holistic understanding, sustainable prevention mitigation designed. To our knowledge, this first time all these metrics have been combined one unified approach. The overall aim paper explore recent advances testing provide recommendations for future being drafted. it important note article itself not intending serve as standard.

Language: Английский

Citations

0
Harnessing Biofilms: From Pathogenicity to Industrial Applications DOI Creative Commons

Nimra Irfan,

Mirza Imran Shehzad

IntechOpen eBooks, Journal Year: 2025, Volume and Issue: unknown

Published: March 6, 2025

Complex microbial colonies called biofilms significantly impact businesses, healthcare, and natural environments. These problems include nosocomial infections in medical equipment, microbial-induced corrosions, industrial inefficiencies due to their remarkable resistance medicines disinfectants. Biofilm production causes significant losses for industries, including food processing, electricity generation, oil gas. Biofilms, however, also have enormous promise bioremediation, wastewater treatment, bioleaching, offering environmentally acceptable answers environmental problems. The management use of are being revolutionized by new tactics such as enzymatic interventions, quorum sensing disruption, bacteriophages, nanoparticles. This chapter examines the dual nature biofilms, highlighting creative ways reduce hazards while maximizing advantages long-term progress.

Language: Английский

Citations

0
Sustainable corrosion inhibition approaches for the mitigation of microbiologically influenced corrosion -a systematic review DOI Creative Commons
Arunagiri Santhosh Kumar,

Lakshminarayanan Sivakumar,

Suriyaprakash Rajadesingu

et al.

Frontiers in Materials, Journal Year: 2025, Volume and Issue: 12

Published: March 13, 2025

Microbiologically influenced corrosion (MIC) significantly affects the durability and integrity of different materials. In MIC, on metals is induced by microbial activities their metabolites, either directly or indirectly. Sulfate-reducing bacteria (SRB), acid-producing (APB), iron-reducing (IRB) are particularly noteworthy to mention as dominating group accounting for 70% incidents due MIC. The metabolites produced these majorly influence metal’s susceptibility they accelerate corrosion. MICs prevalent in marine environments also encountered various sectors including oil fields, storage tanks, cooling water systems, substantially contributing degradation mechanical This frequently leads pipeline leakage equipment failures attributed Beyond economic losses, MIC poses severe safety risks, potential combustion explosions. Researchers have developed strategies mitigate such applying heterocyclic organic inhibitors, plant-based green biosurfactants, nanomaterial-based coatings, inorganic inhibitors. Among approaches, inhibitors highly cost-effective, efficient, practically possible preventing These typically selected based type that needs be mitigated, chosen should act biocides. Extensive research has been conducted elucidate mechanisms inhibition activity. review evaluates effectiveness types used with detailed insights into prevention mechanisms.

Language: Английский

Citations

0
Harnessing microbial fuel cells for mitigating metal corrosion in offshore wind power infrastructure: Mechanisms, applications, and future prospects DOI
Siddhant Srivastava, Chetan Pandit, Hsun‐Yi Chen

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 161759 - 161759

Published: March 1, 2025

Language: Английский

Citations

0
The acceleration of localized copper corrosion by extracellular polymeric substances of sulfate-reducing bacteria DOI
Huixuan Qian,

Tianguan Wang,

Bo Zhang

et al.

Bioelectrochemistry, Journal Year: 2025, Volume and Issue: unknown, P. 108980 - 108980

Published: April 1, 2025

Language: Английский

Citations

0
Dual-Function Hybrid Coatings Based on Polytetrafluoroethylene and Cu2O for Anti-Biocorrosion and Anti-Wear Applications DOI Open Access
Guohui Li, Huan Li,

Yongkun Xu

et al.

Coatings, Journal Year: 2024, Volume and Issue: 14(5), P. 592 - 592

Published: May 9, 2024

Corrosion and wear issues of motion components exposed to water-based corrosion mediums, e.g., naval vessels oil extraction equipment, pose challenges for the lifespan reliability systems. In this work, epoxy-based coatings modified with polytetrafluoroethylene (PTFE) cuprous oxide (Cu2O) nanoparticles were prepared. The anti-corrosion performance was comparatively investigated by electrical impedance spectroscopy Tafel tests in sterile sulphate-reducing bacteria (SRB) mediums. Moreover, tribological behaviors examined under water lubrication conditions. Our results demonstrate that epoxy lower significantly current density icorr charge transfer resistance double layer Rct carbon steel substrate. Interestingly, hybrid filled both PTFE Cu2O exhibit excellent anti-wear performance. After being immersed SRB medium 18 days, pure EP coating are 1.10 × 10−7 Amp/cm2 0.3 Amp/cm2, values 1.04 103 Ω·cm2 3.87 Ω·cm2, respectively. A solid tribofilm forms on stainless counterface sliding against coating, which is surmised be essential low friction coefficients wear. present work paves a route formulating dual-function anti-biocorrosion anti-wear.

Language: Английский

Citations

0