Cathodic Corrosion of Magnesium Alloy AM50 in Deicing Salt Solutions During “Cathodic Protection”

Grabowski, Michael; Virtanen, Sannakaisa

doi:10.5006/2301

Cited by 8 publications

(5 citation statements)

References 49 publications

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“…Moreover, pre-saturation by bubbling with pure H 2 gas leads to the unintended displacement of dissolved O 2 , while pre-saturation by electrolyzing chloride containing solutions can lead to pH changes and the generation of reactive chlorine species at the anode which could influence the corrosion mechanism. 44 Figure 2c shows the schematic of a gravimetric setup with reduced volume of electrolyte that was designed in this study to minimize the dissolution of H 2 into the electrolyte. An air headspace separates the electrolyte in contact with the sample from the electrolyte that is necessary for complete submersion of the collection assembly.…”

Section: Respirometric Approachmentioning

confidence: 99%

Respirometric In Situ Methods for Real-Time Monitoring of Corrosion Rates: Part II. Immersion

Strebl

Bruns

Schulze

et al. 2021

J. Electrochem. Soc.

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With the aim to open a new window into corrosion processes this paper presents respirometric methods for real-time in situ monitoring of corrosion rates under immersion conditions. With these techniques, sensitive, non-destructive corrosion rate measurements are possible on basically all metals and alloys. Different methods are presented that enable to monitor HER, ORR or both reactions simultaneously based on the amount of evolved H2 or the amount of consumed O2 by volumetric, manometric and sensor-based approaches. Various research examples are presented, demonstrating the benefits and limitations of the different approaches. For Mg alloys, besides HER, ORR plays a role in the cathodic reactions and a good correlation of the total cathodic charge with mass loss was obtained. H2 dissolution into the electrolyte was identified as an important factor. The results obtained for Zn immersion corrosion in intermittent-flow and flowthrough respirometric experiments suggest that the ORR mechanism leads to the generation of stable H2O2 under these conditions. As a result, the effective number of exchanged electrons for one O2 molecule was found to be in between two and four. The here introduced respirometric techniques allow new insights into corrosion mechanisms, in addition to enabling real-time monitoring of corrosion.

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Section: Respirometric Approachmentioning

confidence: 99%

Respirometric In Situ Methods for Real-Time Monitoring of Corrosion Rates: Part II. Immersion

Strebl

Bruns

Schulze

et al. 2021

J. Electrochem. Soc.

Self Cite

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“…[ 9 ] In comparison with the more commonly used shallow anode beds, deep‐well anode beds have several significant advantages, including the occupation of less space, wider scope of protection, and a better protective effect. [ 10 ] As a result, deep‐well anode beds have gradually become employed for corrosion protection on buried steel pipelines in urban areas.…”

Section: Introductionmentioning

confidence: 99%

Effect of electrified surface casing on the interference characteristics of stray current generated by deep‐well anode beds

Cen

Dai

Huang

et al. 2022

Materials & Corrosion

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Currently, the impressed current cathodic protection with deep-well anode beds has been found that the surface casing was charged. In this study, 13 deep-well anode beds were selected randomly to investigate whether their surface casings were electrified. Possible causes of the electrification of surface casings are also discussed. A numerical model for simulating the geoelectric field of a representative deep-well anode bed with an electrified surface casing was established and validated by data from on-site testing. The difference | © 2022 Wiley-VCH GmbH.

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“…The most effective protection method of marine metal structures is electrochemical protection [1,2]. These structures are often located far away from stationary sources of electric current and the power transmission to them is very expensive or difficult.…”

Section: Introductionmentioning

confidence: 99%

Comparative efficiency of different realization methods of cathodic protection for marine structures

Chernov

Nugmanov

2021

E3S Web of Conf.

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Economic efficiency in using the solar panels as the DC sources for the impressed current cathodic protection of offshore structures was compared with the sacrificial anode cathodic protection. The calculation was based on the example of a sheet pile wall with a surface area of 2000 m2 protected by various methods of cathodic protection: the impressed current cathodic protection powered by a rectifier device, by solar panels with batteries, by solar panels without batteries and sacrificial anode cathodic protection. The results showed that the cost of impressed current cathodic protection powered by solar panels without batteries is the lowest after 10 years of operation. Cathodic protection powered only by solar panels without batteries is the most beneficial in cold climates when battery life is reduced, and for facilities that are remote from centralized power sources, where the power supplying cost to the protected structure is difficult to estimate due to specific situations.

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Cathodic Corrosion of Magnesium Alloy AM50 in Deicing Salt Solutions During “Cathodic Protection”

Cited by 8 publications

References 49 publications

Respirometric In Situ Methods for Real-Time Monitoring of Corrosion Rates: Part II. Immersion

Respirometric In Situ Methods for Real-Time Monitoring of Corrosion Rates: Part II. Immersion

Effect of electrified surface casing on the interference characteristics of stray current generated by deep‐well anode beds

Comparative efficiency of different realization methods of cathodic protection for marine structures

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