Synthesis of <TEX>$Li_2$</TEX><TEX>$ZrO_3$</TEX> Powder by a Precipitation-Combustion Process

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J. Korean Ceram. Soc. > Volume 35(5); 1998 > Article

Journal of the Korean Ceramic Society 1998;35(5): 451.

침전연소법에 의한 $Li_2$$ZrO_3$ 분말 합성

박지연, 정층환, 오석진, 김영석, 국일현

한국원자력연구소

Synthesis of $Li_2$$ZrO_3$ Powder by a Precipitation-Combustion Process

ABSTRACT

$Li_2$$ZrO_3$ powder which is one of the candidates of breeding materials for the fusion reactor was syn-thesized by a precipitation-combustion process. Although precipitates from the reaction between zirconium nitrate and citric acid were existed in a precursor solution. $Li_2$$ZrO_3$ could easily be obtained by using the mixed fuel of urea and citric acid in stoichiometric composition. The phases of as-synthesized powder con-sisted of $Li_2$$ZrO_3$ and small amounts of $Li_6$$Zr_2O_3$ and $Li_2$$ZrO_3$ The latter phases disappeared after the cal-cination at $1100^{circ}C$ for 2 h. The primary particle size and the specific surface area of as-synthesized powders were smaller than 20nm and 10-14 $M^2$/g, respectively. The primary particle size of the precipitation-combustion synthesized powders was affected by the size of precipitates present in a precursor solution.

Key words: $Li_2$$ZrO_3$, Precipitation-combustion synthesis, Powder preparation, Breeding material