Formation of yttrium aluminum perovskite and yttrium aluminum garnet by mechanical solid-state reaction
Formation of yttrium aluminum perovskite and yttrium aluminum garnet by mechanical solid-state reaction
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DOI：
10.1143/jjap.39.1230
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发表时间：
2000-03-01
期刊：
影响因子：
--
通讯作者：
Sakurai, K
中科院分区：
文献类型：
--
作者：
Guo, XM;Sakurai, K
采用机械固相反应法首次合成了钇铝钙钛矿（雅普）和钇铝石榴石（YAG）多晶微粉。对反应方案进行了详细研究。简而言之，该技术使用两个反应步骤。首先，高能球磨机用于在室温下由氧化铝和氧化钇的化学计量混合物形成Y-Al-O的非平衡无序相。然后，随后的加热使粉末结晶，并根据初始化学组成获得雅普或YAG。也可以制备Al 2 O3-YAG系统。结晶在最高1150摄氏度的温度下完成，因此不需要特殊的高温设备，不像传统的固态反应过程。
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 Al2O3-YAG system is also possible. The crystallization is completed at a maximum temperature of 1150 degrees C, and therefore special high-temperature equipment is not required, unlike in conventional solid-state-reaction procedures.