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Keywords = ZnO-PVDF fiber mesh

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17 pages, 5711 KiB  
Article
Embedded Corrosion Sensing with ZnO-PVDF Sensor Textiles
by Tonoy Chowdhury, Nandika D’Souza, Yee Hsien Ho, Narendra Dahotre and Ifana Mahbub
Sensors 2020, 20(11), 3053; https://doi.org/10.3390/s20113053 - 28 May 2020
Cited by 13 | Viewed by 3872
Abstract
Corrosion in underground and submerged steel pipes is a global problem. Coatings serve as an impermeable barrier or a sacrificial element to the transport of corrosive fluids. When this barrier fails, corrosion in the metal initiates. There is a critical need for sensors [...] Read more.
Corrosion in underground and submerged steel pipes is a global problem. Coatings serve as an impermeable barrier or a sacrificial element to the transport of corrosive fluids. When this barrier fails, corrosion in the metal initiates. There is a critical need for sensors at the metal/coating interface as an early alert system. Current options utilize metal sensors, leading to accelerating corrosion. In this paper, a non-conductive sensor textile as a viable solution was investigated. For this purpose, non-woven Zinc (II) Oxide-Polyvinylidene Fluoride (ZnO-PVDF) nanocomposite fiber textiles were prepared in a range of weight fractions (1%, 3%, and 5% ZnO) and placed at the coating/steel interface. The properties of ZnO-PVDF nanocomposite meshes were characterized using scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) and d33 meter. Electrochemical impedance spectroscopy (EIS) testing was performed during the immersion of the coated samples to validate the effectiveness of the sensor textile. The results offer a new option for sub-surface corrosion sensing using low cost, easily fabricated sensor textiles. Full article
(This article belongs to the Section Nanosensors)
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