Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Low-Temperature Synthesis of Spinel Powders by the Emulsion Technique

MgO-$Al_2O_3$-$SiO_2$계 요업원료의 제조 및 소결특성 -에멜젼법에 의한 Spinel 분체의 저온합성-

  • Published : 1990.05.01
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Abstract

Spinel powders were synthesized at the comparatively low-temperature range(800~90$0^{\circ}C$) by the emulsion-hot kerosene drying method and the effects of kerosene-evaporative conditions on powder characteristics were investigated. In emulsion drying, more unagglomerated and sinterable powders could be synthesized through rapid evaporation of emulsion at the higher kerosene temperature. The completion of formation reaction of spinel observed at the low-temperature range confirmed the high reactivity of powders. The relative theoretical density and the fracture toughness of spinel pellets sintered at 1$650^{\circ}C$ for 4hrs. were 98% and 2.1MN/m3/2, respectively.

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References

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