Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Sintering Behavior of Zircon with SiO2

Silica가 첨가된 지르콘 소결거동

  • Lee, Keun-Bong (Department of Materials Science and Engineering, kyungnam University) ;
  • Kang, Jong-Bong (Department of Materials Science and Engineering, kyungnam University)
  • 이근봉 (경남대학교 대학원 재료공학과) ;
  • 강종봉 (경남대학교 대학원 재료공학과)
  • Published : 2008.11.30
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Abstract

The sintering behavior of zircon with silica was investigated. Zircon with 5 vol% of sedimentation $SiO_2$ resulted in the apparent density of $4.45\;g/cm^3$, the diametral tensile strength of $12.125\;kgf/cm^2$, and the micro Vickers hardness of 1283 HV. The dissociation temperature and mechanical characteristics of the $ZrSiO_4$ were changed with different kinds of $SiO_2$. $SiO_2$ addition prevented dissociation of $ZrSiO_4$. Zircon with 5 vol% of sedimentation $SiO_2$ and with 5 vol% of fused $SiO_2$ resulted in increased diametral tensile strength and increased micro Vickers hardness by suppression of $ZrSiO_4$ dissociation and low temperature liquid $SiO_2$ formation. Zircon with fumed $SiO_2$ and quartz $SiO_2$ resulted in decreased diametral tensile strength and decreased micro Vickers hardness because of cristobalite and quartz phase formation and high temperature liquid $SiO_2$ formation. Zircon with 10 vol% of $SiO_2$ resulted in decreased diametral tensile strength and decreased micro Vickers hardness because of weak particle coupling due to excess formation of liquid $SiO_2$.

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Cited by

  1. vol.54, pp.11, 2017, https://doi.org/10.1080/00223131.2017.1359117