Evidence for Anomalous Grain Growth below the Eutectic Temperature in BaTiO3 Ceramics.

被引:0
作者
Schmelz, Helmut
Meyer, Andreas
机构
来源
CFI Ceramic Forum International | 1982年 / 59卷 / 8-9期
关键词
CERAMIC MATERIALS - Analysis;
D O I
暂无
中图分类号
TQ17 [硅酸盐工业];
学科分类号
0805 ; 080502 ;
摘要
Anomalous grain growth can obviously occur by solid state mechanisms and is not dependent on the presence of a liquid phase as had been generally supposed. The formation of twinned crystals, which can grow preferentially in a dense matrix, is one necessary requirement. Microregions of more advanced shrinkage, containing at least one twin, are the nuclei for anomalous growth. Green density and shrinkage rate (rate of heating), together with the chemical composition, therefore, decisively influence the microstructure of barium titanate.
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页码:436 / 440
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