Non-Arrhenius behavior of grain growth in strontium titanate: New evidence for a structural transition of grain boundaries

被引：70
|
作者：
Rheinheimer, Wolfgang [1 ]
Hoffmann, Michael J. [1 ]
机构：
[1] Karlsruhe Inst Technol, Inst Appl Mat, D-76131 Karlsruhe, Germany
来源：
SCRIPTA MATERIALIA | 2015年 / 101卷
关键词：
Grain growth; Grain boundary transition; Grain growth anomaly; Grain boundary mobility; Abnormal grain growth; SRTIO3; SINGLE-CRYSTALS; BARIUM-TITANATE; INTERFACE MORPHOLOGY; DOPED ALUMINA; COMPLEXION; DIFFUSION; CERAMICS;
D O I：
10.1016/j.scriptamat.2015.01.021
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The grain growth constant of strontium titanate shows a transition to slower grain growth in the temperature range between 1300 degrees C and 1390 degrees C. The current study refines recently published grain growth data. This grain growth anomaly is coupled with the occurrence of bimodal microstructures and exaggerated grain growth. The results give evidence for the coexistence of two different grain boundary types, a fast low temperature-type and a slow high temperature type. Their transition seems to cause the grain growth anomaly. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：68 / 71
页数：4
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