Synthesis and Sintering of Cordierite from Metal Alkoxides(I) -Synthesis of Cordierite from Metal Alkoxides-

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J. Korean Ceram. Soc. > Volume 27(5); 1990 > Article

Journal of the Korean Ceramic Society 1990;27(5): 625.

금속 Alkoxide로부터 Cordierite 분말의 합성 및 소결에 관한 연구(I) -금속 Alkoxide로부터 Cordierite분말의 합성-

한문희, 박금철¹

한국동력자원연구소
¹한양대학교 공과대학 무기재료공학과

Synthesis and Sintering of Cordierite from Metal Alkoxides(I) -Synthesis of Cordierite from Metal Alkoxides-

ABSTRACT

Cordierite powders were prepared from Si(OC2H5)4, Al(OC3H7i)3 and Mg(OC2H5)2 by the sol-gel method. Two different methods were applied for producing fine and homogeneous powders. One is that Si(OC2H5)4 with a lowr rate of hydrolysis was partially hydrolyzed and then Al(OC3H7i)3 and Mg(OC2H5)2 were mixed and reacted. The other is based on the simultaneous hydrolysis of these metal alkoxides using i-C4H9OH which retards the rate of hydrolysis of Al(OC3H7i)3 and Mg(OC2H5)2. It was confirmed that ifne and homogeneous powders were obtained from both methods. Also these powders were calcined at four different temperatures during two hours. X-ray diffraction patterns show only ${mu}$-cordierite phase at 1000$^{circ}C$, ${mu}$-cordierite and ${alpha}$-cordierite phases at 1100-1200$^{circ}C$ and ${alpha}$-cordierite phase at 1300$^{circ}C$ respectively.