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J. Korean Ceram. Soc. > Volume 41(3); 2004 > Article
Journal of the Korean Ceramic Society 2004;41(3): 190.
doi: https://doi.org/10.4191/kcers.2004.41.3.190
침전법을 이용한 YAG분말의 합성 및 소결
하성민, 이재홍1, 박준영1, 심수만
홍익대학교 재료공학부
1홍익대학교 재료공학
Preparation and Sintering of YAG Powder Prepared by Precipitation
Yttrium Aluminum Garnet (YAG) powders were synthesized by precipitation of solutions of Al and Y nitrates using ammonium hydrogen carbonate as a precipitant. Y$_2$O$_3$ and YAG phases were formed in the precipitates, which had been attrition-milled. Well-crystallized, phase-pure YAG powders were obtained after calcination of the milled precipitates at 1100$^{circ}C$ for 1 h. The powders were found to exhibit an excellent sinterability regardless of the addition of SiO$_2$(500 ppm Si) as a sintering aid. All samples already densified to relative densities greater than 70% at 1300$^{circ}C$ and relative densities of ∼83% at 1400$^{circ}C$. The samples doped with SiO$_2$ showed a little improvement in densification as compared with those for the undoped samples and resulted in a relative density of 97% at 1600$^{circ}C$.
Key words: YAG, Powder, Precipitation, Synthesis, Sinterability
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