- Synthesis and Phase Transformation Behavior of YAG Powders by a Mechanochemical Solid Reaction
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Hyun-Gi Jung, Gil-Ho Hwang, Kwang-Young Lim, Young-Hun Lee, Sung-Goon Kang
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J Korean Powder Metall Inst. 2006;13(4):243-249.
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DOI: https://doi.org/10.4150/KPMI.2006.13.4.243
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- 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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Citations
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