Formation of alkoxy-derived yttrium aluminium oxides
Formation of alkoxy-derived yttrium aluminium oxides
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DOI：
10.1007/bf01142034
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发表时间：
1992-03
影响因子：
4.5
通讯作者：
O. Yamaguchi;K. Takeoka;Ken Hirota;H. Takano;Akira Hayashida
中科院分区：
文献类型：
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作者：
O. Yamaguchi;K. Takeoka;Ken Hirota;H. Takano;Akira Hayashida
单斜晶系Y_4Al_2O_9和六方晶系Y_4Al_2O_3由Y和铝双醇盐水解制得的非晶态材料在低温下晶化。六方相YAlO_3在高温下转变为具有石榴石结构的立方相。描述了YAlO_3的形成过程。六方相YAlO_3固溶体在50~62.5摩尔%的Al_2O_3之间结晶。Y-Al-石榴石Y_3Al_5O_(12)(简称Y_3Al_5O_(12))由固溶体转变而成。
Monoclinic Y4Al2O9and hexagonal YAlO3crystallize at low temperatures from amorphous materials prepared by the hydrolysis of yttrium and aluminium double alkoxides. Hexagonal YAlO3transforms to the cubic phase with a garnet structure as an intermediate product at elevated temperatures. The formation process of YAlO3is described. Solid solutions of hexagonal YAlO3crystallize between 50 and 62.5 mol % Al2O3. Yttrium aluminium garnet Y3Al5O12(YAG) is formed by transformation of the solid solution.