| Title: | Durable polyacrylic/siloxane-silica coating for the protection of cast AlSi7Mg0.3 alloy against corrosion in chloride solution |
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| Authors: | ID Rodič, Peter, Institut "Jožef Stefan" (Author)
ID Kapun, Barbara, Institut "Jožef Stefan" (Author)
ID Milošev, Ingrid, Institut "Jožef Stefan" (Author) |
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| Files: |  URL - Source URL, visit https://www.mdpi.com/2073-4360/15/19/3993
 PDF - Presentation file, download (5,65 MB)
MD5: EC6637C590107AB7BC849D7C9C7142F5
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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: | This study presented a novel corrosion protective coating based on polyacrylic/siloxane-silica (PEHA-SS) deposited on lightweight cast aluminium alloy AlSi7Mg0.3. The synthesis of PEHA-SS comprises organic monomer 2-ethylhexyl acrylate and organically modified silane 3-(trimethoxysilyl)propyl methacrylate as well as an inorganic silane, tetraethyl orthosilicate. The steps during the synthesis process were monitored using real-time infrared spectroscopy. The coating deposited onto the AlSi7Mg0.3 surface was characterised using various techniques, including infrared spectroscopy, 3D contact profilometry, and scanning electron microscopy coupled with energy-dispersive X-ray spectroscopy. The corrosion resistance of the coated alloy in sodium chloride solutions was evaluated using electrochemical impedance spectroscopy. The accelerated testing of the uncoated and coated sample was performed using the Machu test. This novel, nine micrometres thick PEHA-SS coating achieved durable corrosion (barrier) protection for the AlSi7Mg0.3 alloy in 0.1 M NaCl during the first four months of immersion or under accelerated corrosion conditions in a Machu chamber containing NaCl, acetic acid, and hydrogen peroxide at 37 °C. |
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| Keywords: | aluminum alloys, corrosion, hybrid sol-gel, Machu test |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 01.09.2023 |
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| Article acceptance date: | 26.09.2023 |
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| Publication date: | 04.10.2023 |
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| Publisher: | MDPI |
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| Year of publishing: | 2023 |
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| Number of pages: | str. 1-17 |
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| Numbering: | Vol. 15, iss. 19, [article no.] 3993 |
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| Source: | Švica |
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| PID: | 20.500.12556/DiRROS-22132  |
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| UDC: | 54 |
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| ISSN on article: | 2073-4360 |
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| DOI: | 10.3390/polym15193993 |
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| COBISS.SI-ID: | 167160579 |
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| Copyright: | © 2023 by the authors. |
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| Note: | Nasl. z nasl. zaslona;
Opis vira z dne 15. 3. 2023;
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| Publication date in DiRROS: | 30.04.2025 |
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| Views: | 674 |
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| Downloads: | 320 |
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