Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Formationof Mullite and Effect of $TiO_2$ on Mullitization

물라이트합성과 $TiO_2$ 의 효과에 관하여

  • 모경화 (한국과학기술연구소 요업재료연구실) ;
  • 정병진 (한국과학기술연구소 요업재료연구실) ;
  • 장성도 (한국과학기술연구소 요업재료연구실)
  • Published : 1976.12.01
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Abstract

Mullite was synthesized by using kaolin and $\alpha$-alumina, and halloysite and aluminum hydroxide as raw materials at the various temperature in the range of 1200$^{\circ}$-1750$^{\circ}$C. The degree of mullitization was measured respectively by a quantitative X-ray diffraction method and a chemical analysis method. The rate and the maximum degree of mullitization were found to increase with temperature . The reaction completed at 1600$^{\circ}$Cfor less than 30 minutes, and yielded 98% mulllite inpurity in the case of kaolin-Al(OH)3. TiO$_2$ up to 3% was added to the batches of kaolin-Al(OH)$_3$. the effect of addition on the mullitization was investigated and found to decrease the sintering temperature for the mullitization. The mechanism of TiO$_2$ addition on the formation of mullite was also discussed.

Keywords

References

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