기계화학적 고상반응에 의한 YAG 분말의 합성 및상 형성 거동에 관한 연구
Synthesis and Phase Transformation Behavior of YAG Powders by a Mechanochemical Solid Reaction
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Abstract
Yttrium aluminum garnet (YAG) powders were synthesized via mechanochemical solid reaction using Y2O3 with three types of aluminum compounds. Y2O3 reacted mechanochemically with all Al compounds and formed YAM (yttrium aluminum monoclinic), YAG, and YAP (yttrium aluminum perovskite) phases depending on the starting materials. The ground samples containing γ-Al2O3 showed the best reactivity, whereas the ground sample containing AlOOH, which had the largest surface area, exhibited pure YAG after calcination at 1200℃. The sample containing Al had the least reactivity, producing YAP along with YAG at 1200℃. The types and grinding characteristics of the starting materials and grinding time are believed to be important factors in the mechanochemical synthesis of YAG.
참고문헌 (3)
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- "Principles of ceramics processing" (1994)