The Effects of $Al_2$O $_2$ on the Formation and Properties of Cordierite Bodies with Clinochlore

Clinochlore를 이용한 Cordierite 소지의 생성 및 성질에 미치는 $Al_2$O$_3$의 영향

  • Ahn, Young-Pil (Department of Ceramic Engineering, Hanyang University) ;
  • Hwang, Jung-Gil (Department of Ceramic Engineering, Hanyang University) ;
  • Choi, Long (Korea Scientific & Technological Informantion Center)
  • 안영필 (한양대학교 요업공학과) ;
  • 황정길 (한양대학교 요업공학과) ;
  • 최롱 (한국과학기술정보센터)
  • Published : 1975.12.01

Abstract

Korean clinochlore, kaolin, pyrophillite and a technical grade of alumina have been used to investigate the effects of Al2O3 on the formation and properties of cordierite bodies. The body compositions were formulated from the proper proportions of the above raw materials to cover the range of composition from the point corresponding to the stoichiometric formula of cordierite, bythe consecutive increasment of 0.2mol. Al2O3, toward the apex of Al2O3 on the MgO-Al2O3-SiO2 triaxial diagram. Each of bodies was fired with the elevated temperatures from 110$0^{\circ}C$ to 140$0^{\circ}C$ by 5$0^{\circ}C$ interval. Linear shrinkage and water absorption were taken as measures for the firing range of the bodies. The formation of cordierite was estimated from the comparative study of X-ray diffraction and dilatometry of the fired bodies. The formation of a large amount of cordierite was initiated about 120$0^{\circ}C$. The content of Al2O3 exceeded up to 0.8 mol. comparing to the stoichiometric formula of cordierite broadens the firing range of the body.

Keywords

References

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