Core-Shell Structures for Stabilization of Size and Phase Composition of the Oxide Nanoparticles at Elevated Temperatures
Доклады на конференциях
The particle size of different oxides (lanthanum and calcium aluminates, zirconium dioxide) was shown to be stabilized in the Oxide@C core-shell structures being subjected to a high temperature treatment. It was found that exactly the small size of the particles is responsible for stabilization of the low-temperature tetragonal phase of ZrO2 as well as lanthanum hexaaluminate phase up to 1300-1400 °C. Since the carbon shell is not applicable for the high-temperature usage in an oxygen-containing medium, effectiveness of magnesium oxide as a shell for stabilization of Oxide@MgO systems was studied as well.