Control of Pore Characteristics of Porous Glass in the <TEX>$ZrO_2.SiO_2$</TEX> System Prepared by the Sol-Gel Method

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J. Korean Ceram. Soc. > Volume 30(6); 1993 > Article

Journal of the Korean Ceramic Society 1993;30(6): 485.

졸-겔법으로 제조한 $ZrO_2.SiO_2$다공질유리의 세공제어

신대용, 한상목

강원대학교 재료공학과

Control of Pore Characteristics of Porous Glass in the $ZrO_2.SiO_2$ System Prepared by the Sol-Gel Method

ABSTRACT

Porous glass in the ZrO2.SiO2 system containning up to 30mol% zirconia were prepared by the sol-gel method from metal alkoxides and their pore characteristics with reaction parameters were investigated. The gels were made by hydrolyzing and condensation of the mixed metla alkoxides and were converted into the porous glass by heating up to $700^{circ}C$. As a results, the mean pore radius became larger with increasing contents of HCl, H2O and hydrolysis temperature, and an alcohol with a large molecular weight for making the porous glass. In the case of 20ZrO2.80SiO2 porous glass with heated at $700^{circ}C$, HCl and H2O content was 0.3mol and 4mol, the specific surface area was 284$m^2$/g, average mean pore radius was about 19.4$AA$, porosity was 22.55% and pore characteristics depended on heating temperature.