Abstract
Composite process by the deposition of fine particles onto surfaces of core particles with a new vessel type mixer has been analyzed. In this paper, a new apparatus based on a high-speed elliptical-rotor-type mixer is proposed. The effects of rotor revolution and processing time on the composite process were investigated, and the composite particles for fuel cell electrodes such as MCFC and SOFC were fabricated. As a result, the mass fraction of fine particles strongly fixed on the core particle surface increased with the rotor revolution and the processing time below the critical revolution. Adding small portion of fine particles repeatedly to the powder was effective to achieve a higher mass fraction of fine particles on the core particle surface.
Filament-shaped Ni particles were successfully covered with fine CoO particles, and NiO sphere particles were also uniformly covered with fine YSZ particles by making use of the apparatus.
