Low-temperature synthesis of a graphene-based, corrosion-inhibiting coating on an industrial grade alloy
| Autor: | Susanne Halkjær, Feng Yu, Luca Camilli, Jon Iversen, Adam Carsten Stoot, Liv Hornekær, Peter Bøggild, Federico Andreatta, Jacques Chevallier, Line Kyhl, Andrew Cassidy |
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| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
acid inhibitions
Materials science 020209 energy General Chemical Engineering Alloy Interfaces 02 engineering and technology Substrate (electronics) engineering.material Corrosion law.invention interfaces Coating law Intergranular corrosion alloy Acid corrosion 0202 electrical engineering electronic engineering information engineering XPS General Materials Science Superalloys superalloys Settore FIS/03 AES Graphene Acid inhibitions General Chemistry 021001 nanoscience & nanotechnology Inconel 625 Superalloy Chemical engineering Raman spectroscopy SEM engineering intergranular corrosion acid corrosion 0210 nano-technology |
| Zdroj: | Halkjær, S, Iversen, J, Kyhl, L, Chevallier, J, Andreatta, F, Yu, F, Stoot, A, Camilli, L, Bøggild, P, Hornekær, L & Cassidy, A M 2019, ' Low-temperature synthesis of a graphene-based, corrosion-inhibiting coating on an industrial grade alloy ', Corrosion Science, vol. 152, pp. 1-9 . https://doi.org/10.1016/j.corsci.2019.01.029 Corrosion Science |
| DOI: | 10.1016/j.corsci.2019.01.029 |
| Popis: | The use of graphene materials as protective coatings for metallic substrates has received much attention because of graphene’s ability to seal a metal and prevent the diffusion of most corrosive species to the metal surface. The application of graphene-based coating technology to industrially relevant samples, however, is hindered by the high growth temperatures required to prepare functional and efficient protective graphene layers. The growth temperatures typical for popular catalysts and precursors are incompatible with most relevant alloys. Here, we present a low-temperature synthesis route to a graphene-based coating, using a complex metallic alloy, Inconel 625, as an example substrate. We demonstrate that the coating reduces the sample corrosion current by two orders of magnitude and also shifts the open circuit potential from −308 mV to + 129 mV. We present an extensive characterisation of the coating and the coating synthesis procedure. The procedure relies on a surface-activated, thermally-induced polymerisation reaction and the method should be transferable to other metallic alloys. |
| Databáze: | OpenAIRE |
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