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J. Korean Ceram. Soc. > Volume 36(1); 1999 > Article
Journal of the Korean Ceramic Society 1999;36(1): 82.
Kaolin을 이용한 Mullite 합성에 미치는 광화제 첨가 효과
임병수, 강경인, 소유영, 박성, 이병하
명지대학교 공과대학 무기재료공학과
The Effect of Mineralizer Addition on Synthesis of Mullite using Kaolin
In this study, the formation of mullite phase with mineralizer have been investiagated Hadong Kaolin and boehmite were used as starting materials and also of TiCl4 and MnCl4 aquous solution were used as a mineralizer. In the addition of 3.5% MnO as a mineralizer, mullite single phase could be obtained at 125$0^{circ}C$ without any other second phases. However in the addition of TiO2 as a mineralizer, mullite single phase is obtained at above 135$0^{circ}C$. Therefore the formation of mullite is lowered in the case of MnO as a mineralizer than of TiO2. Because it is easy to obtain mullite single phase in the case of MnO addition, all the characteristics improved. The values of bulk density, water absorption and bending strength at room temperature were 2.72g/㎤, 0.27% and 180 MPa, respectively.
Key words: Mullite, mineralizer, TiO$_2$, MnO
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