Monitoring active corrosion of metals in natural environments with magnetometry

Gallo, Gonzalo E.; Popovics, John S.

doi:10.1016/j.corsci.2012.06.023

Cited by 8 publications

(2 citation statements)

References 15 publications

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“…The positioning of the two coils on concrete structures measures the potential difference, which is then used to analyze the extent of the corrosion. Gallo et al [ 150 ] introduced a novel corrosion monitoring method based on the magnetic field induced by the electrochemical activity from a uniform corrosion mechanism of a metal sample. Figure 16 shows a scheme of the monitoring system containing a two-unit set of commercial giant magneto-resistive (GMR) sensors for tracking the magnetic fields from the active corrosion of metal plates.…”

Section: Resultsmentioning

confidence: 99%

Low-Cost Technologies Used in Corrosion Monitoring

Komary

Komarizadehasl

Tošić

et al. 2023

Sensors

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Globally, corrosion is the costliest cause of the deterioration of metallic and concrete structures, leading to significant financial losses and unexpected loss of life. Therefore, corrosion monitoring is vital to the assessment of structures’ residual performance and for the identification of pathologies in early stages for the predictive maintenance of facilities. However, the high price tag on available corrosion monitoring systems leads to their exclusive use for structural health monitoring applications, especially for atmospheric corrosion detection in civil structures. In this paper a systematic literature review is provided on the state-of-the-art electrochemical methods and physical methods used so far for corrosion monitoring compatible with low-cost sensors and data acquisition devices for metallic and concrete structures. In addition, special attention is paid to the use of these devices for corrosion monitoring and detection for in situ applications in different industries. This analysis demonstrates the possible applications of low-cost sensors in the corrosion monitoring sector. In addition, this study provides scholars with preferred techniques and the most common microcontrollers, such as Arduino, to overcome the corrosion monitoring difficulties in the construction industry.

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Section: Resultsmentioning

confidence: 99%

Low-Cost Technologies Used in Corrosion Monitoring

Komary

Komarizadehasl

Tošić

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…In order to resolve small structures on objects under investigation, it is crucial to measure fields at similarly small distances above the structures. There are many applications where sub-millimeter spatial resolution is essential, such as integrated microwave circuit characterisation [23], corrosion monitoring [24][25][26], and in lab-on-a-chip environments for microfluidic analytical chemistry and bio-sensing [18,[27][28][29], and molecular imaging [30][31][32].…”

Section: Introductionmentioning

confidence: 99%

Widefield microwave imaging in alkali vapor cells with sub-100μm resolution

Horsley

Treutlein

2015

New J. Phys.

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We report on widefield microwave vector field imaging with sub-100 m m resolution using a microfabricated alkali vapor cell. The setup can additionally image dc magnetic fields, and can be configured to image microwave electric fields. Our camera-based widefield imaging system records 2D images with a 6 × 6 mm 2 field of view at a rate of 10 Hz. It provides up to 50 m m spatial resolution, and allows imaging of fields as close as 150 m m above structures, through the use of thin external cell walls. This is crucial in allowing us to take practical advantage of the high spatial resolution, as feature sizes in near-fields are on the order of the distance from their source, and represent an order of magnitude improvement in surface-feature resolution compared to previous vapor cell experiments. We present microwave and dc magnetic field images above a selection of devices, demonstrating a microwave sensitivity of 1.4 T Hz 1 2 m per 50 50 140 m 3 ḿ´voxel, at present limited by the speed of our camera system. Since we image 120 × 120 voxels in parallel, a single scanned sensor would require a sensitivity of at least 12 nT Hz 1 2 to produce images with the same sensitivity. Our technique could prove transformative in the design, characterization, and debugging of microwave devices, as there are currently no satisfactory established microwave imaging techniques. Moreover, it could find applications in medical imaging.

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Kappaphycus alvarezii – A marine red alga as a green inhibitor for acid corrosion of mild steel

Kamal

Sethuraman

2013

Materials & Corrosion

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The anticorrosion potential of Kappaphycus alvarezii on mild steel in both 1 M HCl and H2SO4 media has been studied using weight loss method at three different temperatures, electrochemical measurements, and surface analyses. The results revealed the inhibitive effect of K. alvarezii. The inhibition efficiency was found to increase with increasing concentration of the algal extract but decreased with increase in temperature which is attributed to the physisorption. The adsorption of the extract on the mild steel surface obeys the Temkin adsorption isotherm. Further, scanning electron microscope (SEM) and atomic force microscope (AFM) analyses supported the inhibitive action of this red alga by the formation of protective layer over the mild steel surface.

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Monitoring active corrosion of metals in natural environments with magnetometry

Cited by 8 publications

References 15 publications

Low-Cost Technologies Used in Corrosion Monitoring

Low-Cost Technologies Used in Corrosion Monitoring

Widefield microwave imaging in alkali vapor cells with sub-100μm resolution

Kappaphycus alvarezii – A marine red alga as a green inhibitor for acid corrosion of mild steel

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