ドクターブレード法によるイットリア固溶セリア膜のプロセッシング

概要

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An Y-doped ceria powder with composition of Ce_<0.8>Y_<0.2>O_<1.9> was prepared by heating oxalate coprecipitate at 600℃ in air. The calcined powder was milled with α-alumina ball of 3 mm diameter. The Y-doped ceria films were formed by doctor blade method applied to aqueous suspensions of 23-35 vol% Y-doped ceria powder with a median size 0.9 μm. The thickness of the formed films depended strongly on the blade clearance. The density of the sintered films was affected by the solid content of the suspension. This result was discussed with the sintering model associated with the shortest distance between particles. Upon heating, a lot of closed pores were formed at the initial stage of sintering. The densification process and microstructures of the films were discussed in relation to the properties of powder compacts consolidated by isostatic pressing.
社団法人日本セラミックス協会の論文
2001-02-01