Microbiologically influenced corrosion in uncoated and coated Mild Steel
Abstract The study aimed to investigate the corrosion performance of Zn-Ni-Cu and Zn-Ni-Cu-TiB2 coatings in the microbial-induced environment (E-Coli, ATCC 25922, and 3.5%NaCl solution). Zn-Ni-Cu and Zn-Ni-Cu-TiB2 were surfaces coated on an ASTM A-36 Steel substrate utilizing a high-velocity oxy-fue...
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2025-04-01
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| author | Sheikh Idrees Ali Sheikh Nazir Ahmad |
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| description | Abstract The study aimed to investigate the corrosion performance of Zn-Ni-Cu and Zn-Ni-Cu-TiB2 coatings in the microbial-induced environment (E-Coli, ATCC 25922, and 3.5%NaCl solution). Zn-Ni-Cu and Zn-Ni-Cu-TiB2 were surfaces coated on an ASTM A-36 Steel substrate utilizing a high-velocity oxy-fuel (HVOF) thermal spray process. Immersion tests following ASTM G-31, and ASTM G1-03, standards were performed in Escherichia Coli (E-Coli, American Type Culture CollectionATCC25922) bacteria medium. The effect of Zn, Ni, and Ti was studied in preventing microbial-induced corrosion.SEM, and XRD analysis before and after helped to understand the morphological and structural changes in coated/uncoated ASTM A-36 steel. Various forms of rust were ascertained in XRD analysis. The inclusion of Zn and Cu inhibited bacterial attachment to the coated surface, hence preventing significant corrosion of the underlying substrate. The coatings performed effectively and inhibited bacterial growth. The uncoated ASTM A-36 Steel specimen showed well-developed bacterial colonies on the surface and in the solution medium. All forms of rust were reported in XRD analysis for uncoated ASTM A-36 steel while few forms of rust were reported in coated ASTM A-36 steel.Electrochemical impedance spectroscopy (EIS) and Tafel polarization in Escherichia coli (E-Coli, ATCC 25922) medium demonstrated that the coated samples had greater corrosion resistance than the uncoated ASTM A-36 Steel specimens. The higher corrosion potential (Ecorr) values of the two coated samples indicated improved anodic protection. |
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| spelling | doaj-art-3bb7dd899f2344869da0fdbb2289e7ce2025-08-20T03:10:17ZengNature PortfolioScientific Reports2045-23222025-04-0115111610.1038/s41598-025-90003-5Microbiologically influenced corrosion in uncoated and coated Mild SteelSheikh Idrees Ali0Sheikh Nazir Ahmad1Department of Mechanical Engineering, National Institute of Technology SrinagarDepartment of Mechanical Engineering, National Institute of Technology SrinagarAbstract The study aimed to investigate the corrosion performance of Zn-Ni-Cu and Zn-Ni-Cu-TiB2 coatings in the microbial-induced environment (E-Coli, ATCC 25922, and 3.5%NaCl solution). Zn-Ni-Cu and Zn-Ni-Cu-TiB2 were surfaces coated on an ASTM A-36 Steel substrate utilizing a high-velocity oxy-fuel (HVOF) thermal spray process. Immersion tests following ASTM G-31, and ASTM G1-03, standards were performed in Escherichia Coli (E-Coli, American Type Culture CollectionATCC25922) bacteria medium. The effect of Zn, Ni, and Ti was studied in preventing microbial-induced corrosion.SEM, and XRD analysis before and after helped to understand the morphological and structural changes in coated/uncoated ASTM A-36 steel. Various forms of rust were ascertained in XRD analysis. The inclusion of Zn and Cu inhibited bacterial attachment to the coated surface, hence preventing significant corrosion of the underlying substrate. The coatings performed effectively and inhibited bacterial growth. The uncoated ASTM A-36 Steel specimen showed well-developed bacterial colonies on the surface and in the solution medium. All forms of rust were reported in XRD analysis for uncoated ASTM A-36 steel while few forms of rust were reported in coated ASTM A-36 steel.Electrochemical impedance spectroscopy (EIS) and Tafel polarization in Escherichia coli (E-Coli, ATCC 25922) medium demonstrated that the coated samples had greater corrosion resistance than the uncoated ASTM A-36 Steel specimens. The higher corrosion potential (Ecorr) values of the two coated samples indicated improved anodic protection.https://doi.org/10.1038/s41598-025-90003-5Bacterium Escherichia ColiHigh-velocity oxy-fuel sprayingMicrobiologically- Induced CorrosionAirborne reactive oxygen speciesBiotic environment |
| spellingShingle | Sheikh Idrees Ali Sheikh Nazir Ahmad Microbiologically influenced corrosion in uncoated and coated Mild Steel Scientific Reports Bacterium Escherichia Coli High-velocity oxy-fuel spraying Microbiologically- Induced Corrosion Airborne reactive oxygen species Biotic environment |
| title | Microbiologically influenced corrosion in uncoated and coated Mild Steel |
| title_full | Microbiologically influenced corrosion in uncoated and coated Mild Steel |
| title_fullStr | Microbiologically influenced corrosion in uncoated and coated Mild Steel |
| title_full_unstemmed | Microbiologically influenced corrosion in uncoated and coated Mild Steel |
| title_short | Microbiologically influenced corrosion in uncoated and coated Mild Steel |
| title_sort | microbiologically influenced corrosion in uncoated and coated mild steel |
| topic | Bacterium Escherichia Coli High-velocity oxy-fuel spraying Microbiologically- Induced Corrosion Airborne reactive oxygen species Biotic environment |
| url | https://doi.org/10.1038/s41598-025-90003-5 |
| work_keys_str_mv | AT sheikhidreesali microbiologicallyinfluencedcorrosioninuncoatedandcoatedmildsteel AT sheikhnazirahmad microbiologicallyinfluencedcorrosioninuncoatedandcoatedmildsteel |