Affiliation(s):
School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China;
moreAffiliation(s): School of Civil Engineering and Architecture, Zhejiang Sci-Tech University, Hangzhou 310018, China; College of Civil and Transportation Engineering, Shenzhen University, Shenzhen 518061, China; Zhejiang Research Institute of Chemical Industry Co. Ltd, Hangzhou 310023, China;
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Peihu SHEN, Jun WEN, Biqin DONG, Hedong LI, Minjia WANG. Corrosion behavior and protection mechanism of carbon steel coated with ECTFE[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2300157
@article{title="Corrosion behavior and protection mechanism of carbon steel coated with ECTFE", author="Peihu SHEN, Jun WEN, Biqin DONG, Hedong LI, Minjia WANG", journal="Journal of Zhejiang University Science A", year="in press", publisher="Zhejiang University Press & Springer", doi="https://doi.org/10.1631/jzus.A2300157" }
%0 Journal Article %T Corrosion behavior and protection mechanism of carbon steel coated with ECTFE %A Peihu SHEN %A Jun WEN %A Biqin DONG %A Hedong LI %A Minjia WANG %J Journal of Zhejiang University SCIENCE A %P %@ 1673-565X %D in press %I Zhejiang University Press & Springer doi="https://doi.org/10.1631/jzus.A2300157"
TY - JOUR T1 - Corrosion behavior and protection mechanism of carbon steel coated with ECTFE A1 - Peihu SHEN A1 - Jun WEN A1 - Biqin DONG A1 - Hedong LI A1 - Minjia WANG J0 - Journal of Zhejiang University Science A SP - EP - %@ 1673-565X Y1 - in press PB - Zhejiang University Press & Springer ER - doi="https://doi.org/10.1631/jzus.A2300157"
Abstract: Ethylene chlorotrifluoroethylene (ECTFE) coating was applied to the surface of carbon steel through electrostatic spraying and low-temperature heat treatment. The morphology and structure of the coating were analyzed using various characterization techniques. The electrochemical data of the coated steel soaked in 3.5wt.%NaCl solution for 90 days at different periods were also examined. The findings indicate that the outer surface of the coating remains structurally stable before and after soaking. F can diffuse into the steel substrate, facilitating the bonding between the coating and the steel substrate but the free F also induces a weakening effect on the crystalline structure. Due to the thickness of the coating edge and the susceptibility to infiltration of the corrosive medium, under-film micro-zone corrosion occurs at a slow rate. After soaking for 90 days, the impedance modulus measures approximately 104 Ω·cm2, and the open circuit potential (OCP) is −0.61 V. The self-corrosion current density is 1.13×10-6 A·cm-2, resulting in a calculated coating protection rate of 99.29%. In summary, despite edge corrosion occurring, the ECTFE coating provides excellent corrosion protection.
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