20.500.12556/DiRROS-17186 Development of multi-component fluoropolymer based coating on simulated outdoor patina on quaternary bronze Bronze reacts with oxygen, humidity, and pollutants in the atmosphere so that a patina forms. Natural exposure to an outdoor atmosphere can be simulated and accelerated in order to achieve a patina that mimics outdoor ancient patina. In order to avoid the uncontrolled dissolving of either the natural or artificially formed patina, protection of the patina is needed. In this study, a multi-component fluoropolymer based coating for the protection of bronze patina was developed. In order to provide various functionalities of the coating (such as the hydrophobicity of the coating surface, obtaining interactions within the coating itself as well as a bronze substrate and inhibiting the corrosion processes), a fluoroacrylate coating with appropriate adhesion promoter was suggested, with and without a silane modified benzotriazole inhibitor. The protective efficiency and durability of the applied coatings were investigated electrochemically using potentiodynamic tests and electrochemical impedance spectroscopy in a simulated acid rain solution. All of the developed coatings showed a significant decrease in the corrosion current density. The self-assembled single layer coating (FA-MS) also showed 100% inhibition efficiency. After ageing the coating remained transparent and did not change by UV exposure and/or thermal cycling. The patina and coating investigations using FIB-SEM and EDX showed that the latter coating (FA-MS) successfully covered the surface of the patinated bronze. The mechanism of the bonding was proposed and supported with the spectroscopic observation of a thin and even coating. bronze patina fluoropolymer coating atmospheric corrosion bron patina fluoropolimerna prevleka atmosferska izpostava true false true Elsevier Sequoia Angleški jezik Slovenski jezik © 2019 The Authors. Published by Elsevier B.V. Neznano 2023-10-25 09:49:21 2023-10-25 09:58:55 2023-10-26 03:35:48 0000-00-00 00:00:00 2019 0 0 str. 27-35 Vol. 131 Jun. 2019 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2019-02-23 544.5/.6 0300-9440 10.1016/j.porgcoat.2019.01.040 2430055 https://www.sciencedirect.com/science/article/pii/S0300944018309743 1 3da04121-72fa-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23326 RAZ_Kosec_Tadeja_2019.pdf RAZ_Kosec_Tadeja_2019.pdf 1 44C73068975F40C4A2B187817E775FE8 e2711a18edb19051707fd2e759e71a45f4df4c938bb100ff099869286da9fa6e 77a34b91-72fb-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23327 RAZ_Kosec_Tadeja_2019.docx RAZ_Kosec_Tadeja_2019.docx 1 1BE8DEF9048A441030F020B67649A39C 61ee3e8b632a0872a5f9358e1d07b1a86f99100248d61ad0fa766241092ef564 8278045d-72fb-11ee-8cc8-001a4af901a5 https://dirros.openscience.si/Dokument.php?lang=slv&id=23328 Zavod za gradbeništvo Slovenije 0 0 0