Stereography of growth of beta''-Al2O3 single crystal films from sapphire substrates

被引：0
作者：
Kuo, CK
Nicholson, PS
机构：
来源：
SOLID STATE IONICS | 1996年 / 84卷 / 1-2期
关键词：
beta''-alumina; sodium; sapphire; single crystal films; oxygen diffusion;
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A model is presented that simulates the growth of Na-beta ''-Al2O3 single-crystal films from sapphire substrates in alkali atmospheres. The formation of beta ''-Al2O3 occurs via Na-O insertion, alpha-Al2O3 oxygen lattice transition and Al3+ ion redistribution. Calculations are presented, based on the chemical and structural free energy changes and the stresses induced by the necessary structural mismatch. Oxygen diffusion is examined at 1235-1350 degrees C on the basis of the model proposed and the microstructure development explained.
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页码：41 / 50
页数：10
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