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J. Korean Ceram. Soc. > Volume 42(4); 2005 > Article
Journal of the Korean Ceramic Society 2005;42(4): 282.
doi: https://doi.org/10.4191/kcers.2005.42.4.282
고상법에 의한 Leucite 합성
윤동섭, 이병하
명지대학교 세라믹공학과
Leucite Synthesis from Solid-State Sintering
Dong-Sup Yoon, Byung-Ha Lee
Department of Ceramic Engineering, Myongji University
Leucite crystal has been utilized for dental porcelain due to its high thermal expansion coefficient to meet its counter metal side. Many industrial applications of leucite from the incongruently melting of potassium feldspar are used and its minimum temperature of crystallization is $1150^{circ}C$. This study aimed to get leucite crystal from lower temperature through congruently melting, and the starting materials are taken from K-feldspar mainly, and aluminum hydroxide and potassium carbonate are additionally supplied to meet stoichiometry of leucite. We report that the leucite crystal can be synthesized in congruently melting from the temperature $950^{circ}C$ through solid-state sintering with k-feldspar, potassium carbonate and aluminum hydroxide.
Key words: Leucite, Aluminum hydroxide, Stoichiometric synthesis of leucite
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