Abstract
Spherical MgO nanoparticles were obtained using the method of electric arc spraying of the Mg-C composite electrode, followed by calcination in air. The composition and morphology of nanostructures, formed at spraying, were studied; kinetics of changes in the elemental composition of the carbon-magnesium composite was investigated at annealing in the range of up to 900 °C. It is shown that during arc spraying, core-shell nanoparticles are formed with a carbon core and shell enriched with magnesium nanoparticles, which are oxidized to MgO at contact with the atmosphere. When carbon-magnesium composites are annealed, carbon burns out; the morphology of magnesium oxide nanoparticles is a 250-nm sphere of magnesium crystals of 20–30 nm in size.
Original language | English |
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Pages (from-to) | 7338-7343 |
Number of pages | 6 |
Journal | Ceramics International |
Volume | 45 |
Issue number | 6 |
DOIs | |
Publication status | Published - 15 Apr 2019 |
Keywords
- Arc discharge
- Calcination
- Condensation
- MgO
- Nanoceramics
- Nucleation
- Powders
- PERFORMANCE
- ADSORBENTS
- GRAPHENE
- NANOCRYSTALLINE MAGNESIUM-OXIDE
- NANOSTRUCTURES
- CO2 CAPTURE
- NANOPARTICLES
- REFRACTORIES
- RAPID SYNTHESIS
- MORPHOLOGY