The Importance of Pipeline Transportation

Razvarz, Sina; Jafari, Raheleh; Gegov, Alexander

doi:10.1007/978-3-030-59246-2_1

Cited by 3 publications

(1 citation statement)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Steel by forming products like ZnO, and Zn(OH)2 which have been reported to kill bacteria by attaching themselves to the bacterial wall and releasing reactive oxygen species (ROS).Zn coatings effectively prevented microbial-induced corrosion in sulfur-reducing bacteria (SRB) medium [Wanget al, 2012].Zn effectively reduced corrosion even in the temperature range of 10-50 0 C in humid conditions of soils where decaying organic matter acts as a precursor for sulfur-reducing bacteria causing corrosion [Razvarz et al, 2021]. Zn alloy coatings performed better in a biocorrosion medium as compared to uncoated steel specimens [Fadl-allahet al, 2016].Multilayered Zn coatings reduced the corrosion of ASTM A-36 Steel in many folds [Nobari and Nekoubin, 2016].…”

Section: Introductionmentioning

confidence: 99%

Escherichia coli (ATCC 25922) induced corrosion in Zn-Ni-Cu and Zn-Ni-Cu- TiB 2 coated ASTM A-36 Steel

Ali,

nazir

2024

Preprint

View full text Add to dashboard Cite

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 presence of Zn and Cu prevented the bacterial attachment with coated surface and hence prevented the underlying substrate from being corroded substantially.The coatings performed well and limited the growth of bacteria. 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.Tafel polarization and electrochemical impedance spectroscopy (EIS) in Escherichia Coli (E-Coli, ATCC 25922) medium confirmed that coated samples were more corrosion resistant than uncoated ASTM A-36 Steel specimens because of the corrosion potential (Ecorr) values of both coated samples were higher than uncoated ASTM A-36 Steel suggesting better anodic protection. The corrosion current density (Icorr) of both coated samples (Zn-Ni-Cu and Zn-Ni-Cu-TiB2) were lower than uncoated ASTM A-36 Steel specimens also inferring better performance.Results of the current study concluded that Zn-Ni-Cu-TiB2 coated ASTM A-36 Steel was able to enhance the microbial-induced corrosion resistance without deteriorating the microstructural, adhesion strength, and other properties of the coating. The mass loss for both Zn-Ni-Cu and Zn-Ni-Cu-TiB2 coatings was 88% less compared to uncoated ASTM A-36 Steel. It is seen from scanning electron micrographs that the coatings produced were well-developed with minimum pores and cracks. After immersion cycle tests none of the coatings showed delamination or microbial colony attachment to the surface compared to ASTM A-36 Steel wherein degradation of the whole surface is visible along with corrosion in the interface.

show abstract

Section: Introductionmentioning

confidence: 99%