Formation of Yttrium Aluminum Perovskite and Yttrium Aluminum Garnet by Mechanical Solid-State Reaction
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概要
- 論文の詳細を見る
Polycrystalline fine powder of yttrium aluminum perovskite(YAP)and yttrium aluminum garnet(YAG)have been successfully synthesized for the first time by mechanical solid-state reaction. The reaction scheme has been studied in detail. In short, the technique uses two reaction steps. First, a high-energy ball mill is used for the formation of a non-equilibrium disordered phase of Y-Al-O from a stoichiometric mixture of alumina and yttria at room temperature. Then, subsequent heating crystallizes the powder and obtains either YAP or YAG, depending on the initial chemical composition. Preparing the Al_2O_3-YAG system is also possible. The crystallization is completed at a maximum temperature of 1150℃, and therefore special high-temperature equipment is not required, unlike in conventional solid-state-reaction procedures.
- 社団法人応用物理学会の論文
- 2000-03-15
著者
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SAKURAI Kenji
National Institute for Materials Science (NIMS)
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Sakurai K
Univ. Tokyo Tokyo Jpn
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GUO Xiaomei
National Research Institute for Metals
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Sakurai Kenji
National Institute For Materials Science
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