Corrosion resistance studies of carbon-encapsulated iron nanoparticles
The carbon coating in carbon-encapsulated magnetic nanoparticles is considered as a tight and impermeable barrier which should perfectly protect the magnetic core material from external chemical environment. To study the integrity of the coating, carbon-encapsulated iron nanoparticles were subjected...
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| Veröffentlicht in: | Journal of materials science 2018-03, Vol.53 (5), p.3805-3816 |
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| creator | Fronczak, Maciej Łabędź, Olga Kaszuwara, Waldemar Bystrzejewski, Michał |
| description | The carbon coating in carbon-encapsulated magnetic nanoparticles is considered as a tight and impermeable barrier which should perfectly protect the magnetic core material from external chemical environment. To study the integrity of the coating, carbon-encapsulated iron nanoparticles were subjected to corrosion tests, in which various corrosion agents were used. Several mineral and organic acids, as well as active gaseous environments with various oxidation potential, were applied. Additionally, the corrosion resistance was studied under the so-called galvanic corrosion, using two metal ions (copper and silver) which have higher redox potential than the zero-valent iron. The release of iron from the core as well as the morphology, structural features, chemical composition, and magnetic properties of carbon-encapsulated iron nanoparticles was systematically monitored at each stage of the corrosion process. The largest release of Fe from the encapsulate core was observed when nitric acid was used as the corrosion agent. |
| doi_str_mv | 10.1007/s10853-017-1793-z |
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To study the integrity of the coating, carbon-encapsulated iron nanoparticles were subjected to corrosion tests, in which various corrosion agents were used. Several mineral and organic acids, as well as active gaseous environments with various oxidation potential, were applied. Additionally, the corrosion resistance was studied under the so-called galvanic corrosion, using two metal ions (copper and silver) which have higher redox potential than the zero-valent iron. The release of iron from the core as well as the morphology, structural features, chemical composition, and magnetic properties of carbon-encapsulated iron nanoparticles was systematically monitored at each stage of the corrosion process. 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All Rights Reserved. © 2017. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). 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To study the integrity of the coating, carbon-encapsulated iron nanoparticles were subjected to corrosion tests, in which various corrosion agents were used. Several mineral and organic acids, as well as active gaseous environments with various oxidation potential, were applied. Additionally, the corrosion resistance was studied under the so-called galvanic corrosion, using two metal ions (copper and silver) which have higher redox potential than the zero-valent iron. The release of iron from the core as well as the morphology, structural features, chemical composition, and magnetic properties of carbon-encapsulated iron nanoparticles was systematically monitored at each stage of the corrosion process. 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| subjects | Carbon Characterization and Evaluation of Materials Chemical composition Chemistry and Materials Science Classical Mechanics Coatings Corrosion (Chemistry) Corrosion resistance Corrosion tests Crystallography and Scattering Methods Encapsulation Galvanic corrosion Iron Magnetic cores Magnetic properties Materials Science Metals Morphology Nanoparticles Nitric acid Organic acids Organic chemistry Oxidation resistance Polymer Sciences Protective coatings Silver Solid Mechanics |
| title | Corrosion resistance studies of carbon-encapsulated iron nanoparticles |
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