Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Lightweight Porcelain using GHM(Glass Hollow Microsphere)

유리질 중공체 GHM(Glass Hollow Microsphere)을 활용한 자기의 경량화

  • 김근희 (한국세라믹기술원 도자세라믹센터) ;
  • 최효성 (한국세라믹기술원 도자세라믹센터) ;
  • 피재환 (한국세라믹기술원 도자세라믹센터) ;
  • 조우석 (한국세라믹기술원 도자세라믹센터) ;
  • 김경자 (한국세라믹기술원 도자세라믹센터)
  • Received : 2010.11.26
  • Accepted : 2010.12.21
  • Published : 2011.01.31
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Abstract

The pore generation technology using GHM (Glass Hollow Microsphere) was studied in order to reduce the weights of porcelain. In this study, we verify the property of modified slurry by adding GHM. The modified slurry was prepared by adding 1.0~2.5 wt%(K1), 1.0~6.0 wt%(K37) of GHM to the slurry for porcelain. The slurry viscosity were stable inside a content range of 1.0~2.5 wt%(K1), 1.0~6.0 wt%(K37). However, the viscosity of modified slurry increased more than 3.0 wt%(K1) and 6.5 wt%(K37). The formed specimen by slip casting was fired at $1229^{\circ}C$, $1254^{\circ}C$. As the amount of GHM content increased, the weight decreased and the addition of 1.0~2.5 wt%(K1), 1.0~6.0 wt%(K37) of GHM resulted in a weight drop of 30%(K1) and 25(K37). However, when the GHM content increased, the strength decreases over 70%. This is caused by the presence of a large volume of surface defects (pores) and defects from the agglomeration of GHM.

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References

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