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- 기계화학적 고상반응에 의한 YAG 분말의 합성 및 상 형성 거동에 관한 연구
- 정현기, 황길호, 임광영, 이영훈, 강성군
- Synthesis and Phase Transformation Behavior of YAG Powders by a Mechanochemical Solid Reaction
- Hyun-Gi Jung, Gil-Ho Hwang, Kwang-Young Lim, Young-Hun Lee, Sung-Goon Kang
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Journal of Korean Powder Metallurgy Institute 2006;13(4):243-249
DOI: https://doi.org/10.4150/KPMI.2006.13.4.243
2한양대학교 신소재공학과
3홍익대학교 재료공학부
4요업기술원 전자부품.소재본부
5한양대학교 신소재공학과
1Division of Materials Science and Engineering, Hanyang University
2Division of Materials Science and Engineering, Hanyang University
3School of Materials Science and Engineering, Hongik University
4Electronic Parts & Materials Group, Korea Institute of Ceramic Engineering and Technology
5Division of Materials Science and Engineering, Hanyang University
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Abstract
Yttrium aluminum garnet (YAG) powders were synthesized via mechanochemical solid reaction using Y_2O_3 with three types of aluminum compounds. Y_2O_3 reacted mechanochemically with all A1 compounds and formed YAM (yttrium aluminum monoclinic), YAG and YAP (yttrium aluminum perovskite) phases depending on the starting materials. The ground samples containing gamma-A1_2O_3 showed the best reactivity, whereas the ground sample containing A100H, which had the largest surface area, exhibited pure YAG after calcination at 1200°C. The sample containing Al had the least reactivity, producing YAP along with YAG at 1200°C. The types and grinding characteristics of the starting materials and grinding time are believed to be important factors in the mechanochemical synthesis of YAG.
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