Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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A Study on Reaction of During Firing of $CaO-Al_2O_3-SiO_2$ System

$CaO-Al_2O_3-SiO_2$ 계의 열간반응에 관한 연구

  • 백용혁 (한양대 무기재료공학과) ;
  • 이종근 (한양대 무기재료공학과)
  • Published : 1982.04.01
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Abstract

This study was carried out to research the change of mineral phases and the characteristics (apparent specific gravity, water absorption, firing shrinkage and thermal expansion etc) of the sintered bodies composed of larnite, wollastonite and anorthite etc. in $CaO-Al_2O_3-SiO_2$ system. Test bodies were composed of the same theoretical composition as it of anorthite and fired up to $1450^{\circ}C$. Investigated the change and micro-structure of the mineral phases by XRD and SEM, the characteristics of the sintered bodies by DTA/TGA and etc. The results were as follows. 1. The sintering temperature had a higher about $60^{\circ}C$ than that of $CaO-SiO_2$ system because of coexisting $Al_2O_3$. 2. The formation and transition temperature of $\beta$-wol lastonite and $\alpha$-wollastonite were similar to the results of $CaO-SiO_2$ system. 3. The formed larnite and wollastonite were decomposed and melted at about $1260^{\circ}C$. 4. Anorthite began to be synthesized at $1140^{\circ}C$, its quantity was repidly increased according to the temperature rising.

Keywords

References

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  4. ibid v.82 no.11 Synthetic Wollastonite and Molded Material from it Kazuhiko KUBO(外)
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  7. Ibid v.11 no.2 A Study on the Wollastonite(Ⅱ) Hee-Soo Lee(外)
  8. Ibid v.13 no.2 A Study on the Development of Fast Firing Wall Tile Body(Ⅰ) Young-pil Ahn(外)
  9. ibid v.14 no.3 The Study on Wallastonite-Anorthite Synthesis from Domestic Raw Materials Young-pil Ahn(外)
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