易焼結性 Ce_0.9Gd_0.1O_1.95 ナノ粒子の量産技術の開発

抄録

The mass production process of Ce_0.9Gd_0.1O_1.95 (CGO) nanopowder with high-sintering characteristics has been studied. Although CGO powders were fabricated using a large scale coprecipitation bath with a capacity of 65 kg/batch, particle size distribution curve of this powder showed two peaks for the agglomeration and this powder showed lower sintering characteristics, compared to the CGO nanopowder by a small scale bath with a capacity of 0.1 kg/batch. It was found that when the impurity of NO₃ ^- in the powder was removed by water using the rate of 50 L/kg, the formation of oval shape particles was observed and it is easy to crush the agglomerations in the powder by hammer-type mill. The sintering characteristics of this powder are almost same to those of the powder synthesized by the small scale bath.