Analysis of Production Process of Oxidized Metallic Powder. 2nd Report. Preparation of Cerium Dioxide Particles by Spray Pyrolysis Method.
Year: 1998
Type: article
Abstract: The purpose was to elucidate the production process of cerium dioxide particles, and the influenc of the production conditions on the pyrolysis process of cerium nitrate droplet and the powder characteristics of the produced particles were examined. Particularly, initial droplet diameter, initial metal concentration and air temperature were attracted as the production conditions and the influence of them on the size distribution, specific surface area, bulk density and shape of the produced particles were investigated. The mono-dispersed spray with narrow droplet size distribution was injected into a hot air stream and cerium dioxide particles were collected. The size distribution of produced particles was wide in comparison with the initial droplet size distribution, because the sample droplets were scattered or broken up by foaming in the process. The scattering or breakup of droplets due to foaming was promoted with increase of air temperature, the frequency of fine particles increased and mode diameter of produced particles dicreased. From the observation with SEM and TEM, the produced particles were porous.
Authors: Hiroyuki SANO, Mamoru KOBAYASHI, Akio TODOKORO, Yoshiharu TAKAHASHI, Keiichi KAWASE, Naochika TOKUOKA
Language: English
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W352484770