Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloy
A hybrid coating based on polyorganosilazane (Durazane® 1800) combined with 3-glycidyloxypropyltrimethoxysilane (GPTMS) was successfully synthesized to improve the corrosion resistance of the AA2024-T3 aluminum alloy. The polymers were cross–linked with the addition of tetra-n-butylammonium fluoride...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-10-01
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| Series: | Results in Surfaces and Interfaces |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666845923000545 |
| _version_ | 1797398965339029504 |
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| author | Udhaya Kumar Aruchamy Emilia Merino Alicia Durán Maroš Eckert Dušan Galusek Yolanda Castro |
| author_facet | Udhaya Kumar Aruchamy Emilia Merino Alicia Durán Maroš Eckert Dušan Galusek Yolanda Castro |
| author_sort | Udhaya Kumar Aruchamy |
| collection | DOAJ |
| description | A hybrid coating based on polyorganosilazane (Durazane® 1800) combined with 3-glycidyloxypropyltrimethoxysilane (GPTMS) was successfully synthesized to improve the corrosion resistance of the AA2024-T3 aluminum alloy. The polymers were cross–linked with the addition of tetra-n-butylammonium fluoride (TBAF), and the hybrid coatings were deposited on aluminum substrates by dip coating and dried at 120 °C. Crack-free films with a thickness of 13 μm were obtained. Field emission electron microscopy (FESEM) analysis indicated that the synthesized hybrid films were smooth, homogenous, and devoid of cracks. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) studies demonstrated that the intensity of the Si–N–Si peak was maintained, showing that the backbone of the polysilazane was preserved after the addition of GPTMS. Nuclear magnetic resonance (NMR) spectroscopy indicated that glycidoxypropyl groups were still present in the Si–O–N network of the modified polysilazane. Contact angle measurements indicated that the hybrid coatings were hydrophobic, with a measured contact angle of 93 ± 6°. The electrochemical results confirmed that the synthesized hybrid coatings improved the corrosion resistance of the aluminum substrate in 3.5 wt% NaCl solution. This suggest that the modified polyorganosilazane coating is an effective solution for developing anti-corrosive coatings on metal substrates, offering excellent adhesion strength and good scratch resistance. |
| first_indexed | 2024-03-09T01:33:08Z |
| format | Article |
| id | doaj.art-574762e2f7e24eba8c483d25156a6875 |
| institution | Directory Open Access Journal |
| issn | 2666-8459 |
| language | English |
| last_indexed | 2024-03-09T01:33:08Z |
| publishDate | 2023-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Surfaces and Interfaces |
| spelling | doaj.art-574762e2f7e24eba8c483d25156a68752023-12-09T06:08:21ZengElsevierResults in Surfaces and Interfaces2666-84592023-10-0113100147Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloyUdhaya Kumar Aruchamy0Emilia Merino1Alicia Durán2Maroš Eckert3Dušan Galusek4Yolanda Castro5Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, Študentská 2, 91150 Trenčín, Slovakia; Instituto de Cerámica y Vidrio (ICV), CSIC, Campus de Cantoblanco, 28049 Madrid, SpainInstituto de Cerámica y Vidrio (ICV), CSIC, Campus de Cantoblanco, 28049 Madrid, SpainInstituto de Cerámica y Vidrio (ICV), CSIC, Campus de Cantoblanco, 28049 Madrid, SpainFaculty of Special Technology, Alexander Dubček University of Trenčín, 91106, Trenčín, SlovakiaCentre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, Študentská 2, 91150 Trenčín, Slovakia; Joint Glass Centre of the IIC SAS, TnUAD and FChPT STU, 91150 Trenčín, Slovakia; Corresponding author. Centre for Functional and Surface Functionalized Glass, Alexander Dubček University of Trenčín, Študentská 2, 91150 Trenčín, Slovakia.Instituto de Cerámica y Vidrio (ICV), CSIC, Campus de Cantoblanco, 28049 Madrid, Spain; Corresponding author. Instituto de Cerámica y Vidrio (ICV), CSIC, Campus de Cantoblanco, 28049 Madrid, Spain.A hybrid coating based on polyorganosilazane (Durazane® 1800) combined with 3-glycidyloxypropyltrimethoxysilane (GPTMS) was successfully synthesized to improve the corrosion resistance of the AA2024-T3 aluminum alloy. The polymers were cross–linked with the addition of tetra-n-butylammonium fluoride (TBAF), and the hybrid coatings were deposited on aluminum substrates by dip coating and dried at 120 °C. Crack-free films with a thickness of 13 μm were obtained. Field emission electron microscopy (FESEM) analysis indicated that the synthesized hybrid films were smooth, homogenous, and devoid of cracks. Attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) studies demonstrated that the intensity of the Si–N–Si peak was maintained, showing that the backbone of the polysilazane was preserved after the addition of GPTMS. Nuclear magnetic resonance (NMR) spectroscopy indicated that glycidoxypropyl groups were still present in the Si–O–N network of the modified polysilazane. Contact angle measurements indicated that the hybrid coatings were hydrophobic, with a measured contact angle of 93 ± 6°. The electrochemical results confirmed that the synthesized hybrid coatings improved the corrosion resistance of the aluminum substrate in 3.5 wt% NaCl solution. This suggest that the modified polyorganosilazane coating is an effective solution for developing anti-corrosive coatings on metal substrates, offering excellent adhesion strength and good scratch resistance.http://www.sciencedirect.com/science/article/pii/S2666845923000545CorrosionPolysilazaneGPTMSSynthesisCoatingsElectrochemistry |
| spellingShingle | Udhaya Kumar Aruchamy Emilia Merino Alicia Durán Maroš Eckert Dušan Galusek Yolanda Castro Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloy Results in Surfaces and Interfaces Corrosion Polysilazane GPTMS Synthesis Coatings Electrochemistry |
| title | Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloy |
| title_full | Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloy |
| title_fullStr | Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloy |
| title_full_unstemmed | Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloy |
| title_short | Polyorganosilazane/GPTMS functionalized silica coatings as an integrated corrosion–resistance system for AA2024-T3 aluminum alloy |
| title_sort | polyorganosilazane gptms functionalized silica coatings as an integrated corrosion resistance system for aa2024 t3 aluminum alloy |
| topic | Corrosion Polysilazane GPTMS Synthesis Coatings Electrochemistry |
| url | http://www.sciencedirect.com/science/article/pii/S2666845923000545 |
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