Journal of the Korean Crystal Growth and Crystal Technology (한국결정성장학회지)

The Korea Association of Crystal Growth (한국결정성장학회)
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Effects of viscosities of slip on slip casting and properties of sintered bodies of cordierite

Slip의 점도가 slip casting 및 casting 및 cordierite 소결체의 특성에 미치는 영향

  • Baik Yong-Hyuck (Department of Ceramic Engineering, Chonnam National University) ;
  • Chang Pok-Kie (Department of Ceramic Engineering, Chonnam National University) ;
  • Kwak Hyo-Sup (Department of Life & Science Technology, Daebul University)
  • 백용혁 (전남대학교 세라믹공학과) ;
  • 장복기 (전남대학교 세라믹공학과) ;
  • 곽효섭 (대불대학교 생명응용과학부)
  • Published : 2005.10.01
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Abstract

We have investigated the relationship between a viscosity of the slip prepared from kaolin, quartz, $Mg(OH)_2$, etc and its influence on the speed of slip casting and the microsturcture of a sintered body. The speed of slip casting decreases as a viscosity of a slip decreases. The optimized viscosity range of a slip was found to be around $3.0\~17.0\;cP$. By careful controlling a viscosity of slip, homogeneous microstructure of outer surface layers, inner surface layers, intermediate layers, and inside layers were obtained by casting process. The specimen sintered at $1350^{\circ}C$ consists of a cordierite crystalline phase only as a constituent mineral.

Kaolin과 규석 및 $Mg(OH)_2$등의 원료로 만들어진 slip을 casting 할 때 slip의 점도가 slip casting 속도와 소결체의 미세조직에 미치는 영향을 보면 slip-casting속도는 slip의 점도가 낮을 경우 감소하였으며 slip의 점도범위는 $3.0\~17.0\;cP$가 적당하였다. Slip의 점도를 조절하면 표면층, 표면 내부층, 중간층, 내면층의 미세조직을 비교적 균일하게 casting 할 수 있다 소성온도 $1350^{\circ}C$에서 시편의 구성광물은 cordierite 결정만으로 되어있었다.

Keywords

References

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