Corrosion Studies
Measurement of oxygen (in aqueous and gas phases) during corrosion processes can be realized using fiber-optic and contactless oxygen sensors from PyroScience. Typical applications of our optical sensors in such studies are:
- Determination of dissolved oxygen (DO) consumption
- Monitoring dissolved oxygen (DO) above corroding surfaces
- Resolving oxygen gradients developed during corrosion
- Studies on effects of corrosion inhibitors and other parameters influencing corrosion protection
- Microbially influenced corrosion (MIC) and impact on degradation of structural steel in marine settings
- Biocorrosion dynamics in the environment
- Monitoring of oxygen reduction in closed incubations, respirometric approach
Optical oxygen sensors from PyroScience feature no oxygen consumption, no chemical reaction/alkalinisation during measurements, no electrical interference (compared to polarized amperometric O2 probes), but ultra-fast measurements and high spatial resolution. They are available as retractable micro- and minisensors and without metal parts as bare fiber micro- and minisensors. All oxygen sensors can be read-out with our multi-channel PC-operated FireSting-O2 , multi-analyte meter FireSting-PRO (also in combination with our optical pH sensors), or stand-alone with our pocket oxygen meter FireSting-GO2.
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Silva et al. 2018https://doi.org/10.1002/open.201800076, https://creativecommons.org/licenses/by-nc/4.0/
Another advantage of optical sensors compared to electrochemical sensors is the possibility to conduct non-invasive measurements through transparent vessels e.g. for atmospheric corrosion rate monitoring. Contactless read-out from the outside through the vessel wall reduces the risk of leakage.
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Strebl et al. 2020, https://doi.org/10.1149/1945-7111/ab6c61, http://creativecommons.org/licenses/by-nc-nd/4.0/
Applicable Sensor Types and Products
- Bare Fiber Oxygen Microsensors (OXB50)
- Bare Fiber Oxygen Minisensors (OXB430)
- Retractable Microsensors (OXR50)
- Retractable Minisensors (OXR430)
- Incubations with oxygen (and pH) sensor spots in closed chambers with accessories for contactless read-out
- Microprofiling set-up (MU1, MM33, MUX2, HS1, LS1)
Related Peer-Reviewed Publications
Respirometric in Situ Methods for Real-Time Monitoring of Corrosion Rates: Part III. Deconvolution of Electrochemical Polarization Curves
Strebl, M. G., Bruns, M. P., & Virtanen, S. (2023). Journal of The Electrochemical Society.
https://doi.org/10.1149/1945-7111/abdb4a
Exploring the contribution of oxygen reduction reaction to Mg corrosion by modeling assisted local analysis
Wang, C., Xu, W., Höche, D., Zheludkevich, M. L., & Lamaka, S. V. (2023). Journal of Magnesium and Alloys, 11(1), 100-109.
https://doi.org/10.1016/j.jma.2022.09.031
Approaching "stainless magnesium" by Ca micro-alloying
Deng et al. 2020, Materials Horizons
https://doi.org/10.1039/D0MH01380C
High rate oxygen reduction reaction during corrosion of ultra-high-purity magnesium
Wang et al. 2020, npj Materials Degradation
https://doi.org/10.1038/s41529-020-00146-1
Corrosion Inhibition at Scribed Locations in Coated AA2024-T3 by Cerium- and DMTD-Loaded Natural Silica Microparticles under Continuous Immersion and Wet/Dry Cyclic Exposure
Denissen et al. 2020, ACS Applied Materials & Interfaces
https://doi.org/10.1021/acsami.0c03368
Calcium carbonate particles loaded with triethanolamine and polyethylenimine for enhanced corrosion protection of epoxy coated steel
Raj et al. 2020, Corrosion Science
https://doi.org/10.1016/j.corsci.2020.108548
Respirometric in Situ Methods for Real-Time Monitoring of Corrosion Rates: Part I. Atmospheric Corrosion
Strebl et al. 2020, Journal of The Electrochemical Society
https://doi.org/10.1149/1945-7111/ab6c61
The Reduction of Dissolved Oxygen During Magnesium Corrosion
Silva et al. 2018, Chemistry Open
https://doi.org/10.1002/open.201800076
Peeking under the Iron Curtain: Development of a Microcosm for Imaging the Colonization of Steel Surfaces by Mariprofundus sp. Strain DIS-1, an Oxygen-Tolerant Fe-Oxidizing Bacterium
Mumford et al., 2016, Applied and Environmental Microbiology
https://doi.org/10.1128/AEM.01990-16
Corrosion inhibition synergies on a model Al-Cu-Mg sample studied by localized scanning electrochemical techniques
Snihirova et al. 2016, Corrosion Science
https://doi.org/10.1016/j.corsci.2016.08.008
Novel use of a micro-optode in overcoming the negative influence of the amperometric micro-probe on localized corrosion measurements
Taryba et al., 2015, Corrosion Science
https://doi.org/10.1016/j.corsci.2015.02.037
Quasi-simultaneous mapping of local current density, pH and dissolved O2
Taryba et al., 2015, Electroanalysis
https://doi.org/10.1002/elan.201500286
Marine rust tubercles harbour iron corroding archaea and sulphate reducing bacteria
Usher et al., 2014, Corrosion Science
https://doi.org/10.1016/j.corsci.2014.02.014