Effects of NH4+, Na+, and Mg2+ ions on the corrosion behavior of galvanized steel in wet–dry cyclic conditions

Neupane, Shova; Hastuty, Sri; Yadav, Nagendra Prasad; Singh, Nilima; Gupta, Dipak Kumar; Yadav, Brahamdeo; Singh, Sanjay; Karki, Nabin; Das, Anju Kumari; Subedi, Vivek; Nakarmi, Krishna Badan; Yadav, Amar Prasad

doi:10.1002/maco.202112360

Cited by 3 publications

(2 citation statements)

References 32 publications

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“…This corrosion current density was the lowest of all solutions, which means that any passive layer formed under these conditions would be the most protective. These results agree with those found by Neupane et al [ 21 ]. They compared the dissolution effects of Na 2 SO 4 , NH 4 SO 4 and MgSO 4 on galvanized steel.…”

Section: Resultssupporting

confidence: 94%

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Effect of Sulfate Ions on Galvanized Post-Tensioned Steel Corrosion in Alkaline Solutions and the Interaction with Other Ions

et al. 2022

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Zinc protection of galvanized steel is initially dissolved in alkaline solutions. However, a passive layer is formed over time which protects the steel from corrosion. The behavior of galvanized steel exposed to strong alkaline solutions (pH values of 12.7) with a fixed concentration of sulfate ions of 0.04 M is studied here. Electrochemical measurement techniques such as corrosion potential, linear polarization resistance and electrochemical impedance spectroscopy are used. Synergistic effects of sulfate ions are also studied together with other anions such as chloride Cl− or bicarbonate ion HCO3− and with other cations such as calcium Ca2+, ammonium NH4+ and magnesium Mg2+. The presence of sulfate ions can also depassivate the steel, leading to a corrosion current density of 0.3 µA/cm2 at the end of the test. The presence of other ions in the solution increases this effect. The increase in corrosion current density caused by cations and anions corresponds to the following orders (greater to lesser influence): NH4+ > Ca2+ > Mg2+ and HCO3− > Cl− > SO42−.

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Section: Resultssupporting

confidence: 94%

“…Solution pH was lowered with the addition of ammonium sulfate and magnesium sulfate. Neupane et al [ 21 ] studied the effect of NH 4 + , Na + , and Mg 2+ cations on the corrosion of galvanized steel. Solutions of (NH 4 ) 2 SO 4 , Na 2 SO 4 and MgSO 4 0.5 M were prepared in distilled water.…”

Section: Introductionmentioning

confidence: 99%

Effect of Sulfate Ions on Galvanized Post-Tensioned Steel Corrosion in Alkaline Solutions and the Interaction with Other Ions

et al. 2022

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Investigation of corrosion behavior of galvanized steel as submarine cable armor in seawater under weak magnetic fields

Chen

Huang

et al. 2023

International Journal of Electrochemical Science

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Indirect electrochemical titration of sulfur impurities in industrial phosphoric acid

HAMID,

Oubaouz,

Haddouchy

et al. 2024

Preprint

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This article explores the corrosion aspects of L316 stainless steel in an environment composed of phosphoric acid extracted from natural phosphates from Morocco, in the presence of sulfate ions. L316 stainless steel is widely used in various industries, but its behavior in the presence of phosphoric acid and sulfate ions has attracted growing interest. The study was carried out using experimental techniques such as electrochemical tests like cyclic voltametry (VC), impedance spectroscopy (EIS) and Taffel curves (VL), surface analysis, and weight loss measurements. The results indicate that the presence of sulfate ions has a significant impact on the corrosion rate of L316 steel in the extracted phosphoric acid medium. Specific corrosion mechanisms were proposed and discussed on the basis of the experimental observations.

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Effects of NH₄⁺, Na⁺, and Mg²⁺ ions on the corrosion behavior of galvanized steel in wet–dry cyclic conditions

Cited by 3 publications

References 32 publications

Effect of Sulfate Ions on Galvanized Post-Tensioned Steel Corrosion in Alkaline Solutions and the Interaction with Other Ions

Effect of Sulfate Ions on Galvanized Post-Tensioned Steel Corrosion in Alkaline Solutions and the Interaction with Other Ions

Investigation of corrosion behavior of galvanized steel as submarine cable armor in seawater under weak magnetic fields

Indirect electrochemical titration of sulfur impurities in industrial phosphoric acid

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