| Title: | Molybdate and vanadate ions as corrosion inhibitors for clad aluminium alloy 2024-T3 |
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| Authors: | ID Milošev, Ingrid, Institut "Jožef Stefan" (Author)
ID Pavlovčič, Tjaša (Author)
ID Tomšič, Matija (Author) |
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| Files: |  URL - Source URL, visit https://www.sciencedirect.com/science/article/pii/S0013468624011319?via%3Dihub
 PDF - Presentation file, download (14,88 MB)
MD5: 2226AEBAE7529623D3F302B6D4D429E3
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| Language: | English |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: |  IJS - Jožef Stefan Institute
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| Abstract: | Molybdate and vanadate ions were used as corrosion inhibitors for the clad aluminium alloy 2024-T3 in chloride solution to investigate the differences in their inhibitory effect. Electrochemical measurements in 0.1 M NaCl investigated the influence of inhibitor concentration from 0.5 mM to 250 mM, solution pH from 5 to 9 and immersion time at open circuit potential of up to 12 h. Both compounds act predominantly as anodic inhibitors; however, the effect of molybdate increases significantly at concentrations above 50 mM and leads to a broad passive range. Surface analysis of the samples exposed to inhibitor performed by X-ray photoelectron spectroscopy showed that the inhibitor layers consist of oxides of multiple valences. Scanning electron microscopy with chemical analysis was also used to characterise the inhibitor layers. Equilibrium diagrams of the aqueous species in the selected concentration range were generated to better understand the inhibition mechanism and to correlate the electrochemical data and data on surface properties. |
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| Keywords: | molybdate, corrosion inhibitors, aqueous chemistry |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 01.06.2024 |
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| Article acceptance date: | 12.08.2024 |
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| Publication date: | 13.08.2024 |
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| Publisher: | Elsevier |
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| Year of publishing: | 2024 |
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| Number of pages: | str. 1-21 |
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| Numbering: | Vol. 504, [article no.] 144893 |
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| Source: | Nizozemska |
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| PID: | 20.500.12556/DiRROS-22074  |
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| UDC: | 54 |
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| ISSN on article: | 1873-3859 |
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| DOI: | 10.1016/j.electacta.2024.144893 |
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| COBISS.SI-ID: | 205238275 |
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| Copyright: | © 2024 The Author(s). |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 26. 8. 2024;
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| Publication date in DiRROS: | 18.04.2025 |
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| Views: | 886 |
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| Downloads: | 263 |
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