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논문 상세정보

에멀젼을 이용한 $Al_2O_3$-$ZrO_2$ 복합분체의 제조(IV) : 에멀젼-분무열분해법

Preparation of $Al_2O_3$-$ZrO_2$Composite Powders by the Use of Emulsions(IV) : Emulsion-Spray Pyrolysis Method

Abstract

A new process of emulsiion-spray pyrolysis for synthesizing ceramic powders was developed and the characteristics of Al2O3-20w/o ZrO2 composite powders prepared by this method were investigated. The composite powders synthesized in this study were spherical dense particles with 0.1~0.4${\mu}{\textrm}{m}$ of diameter. As found in powders derived by the emulsion-hot kerosene drying method, all zirconia in Al2O3-20w/o ZrO2 powders heat-treated at 120$0^{\circ}C$ was in the tetragonal form at room temperature. The relative density and the fracture toughness of composites sintered at 1$650^{\circ}C$ for 4hrs were 95% and 5.2MPa.m1/2, respectively.

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