Atomistic study of abnormal grain growth structure in BaTiO3 by transmission electron microscopy and scanning transmission electron microscopy

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	Atomistic study of abnormal grain growth structure in BaTiO3 by transmission electron microscopy and scanning transmission electron microscopy
	S. J. Zheng; X. L. Ma; T. Yamamoto; Y. Ikuhara
	2013
发表期刊	Acta Materialia
ISSN	1359-6454
卷号	61 期号:7 页码:2298-2307
摘要	An accurate understanding of the atomistic structure of interfaces is crucial to explain the mechanism of abnormal grain growth (AGG) in polycrystalline materials. In this work we investigated the atomistic structure of interfaces in a Ti excess BaTiO3 by transmission electron microscopy (TEM) and Cs-corrected scanning transmission electron microscopy (STEM). After sintering at 1300 degrees C in air, the Ti excess BaTiO3 shows typical AGG morphology with {1 1 1} twin lamellae and {1 1 1} faceted grain boundaries. A sub-nanometer Ti-rich intergranular phase and a second phase, Ba4Ti10Al2O27, at the {1 1 1} faceted grain boundaries were indentified. The intergranular phase and the Ba4Ti10Al2O27 exhibit epitaxial relationships with BaTiO3 in stacking sequences of {1 1 1} BaTiO3/intergranular phase/(1 0 0) Ba4Ti10Al2O27 and {1 1 1} BaTiO3/(1 0 0) Ba4Ti10Al2O27. Additionally, two orientation relationships were identified, [1 1 0] BaTiO3 // [0 (1) over bar 0] Ba4Ti10Al2O27 and [1 1 0] BaTiO3 // [0 1 0] Ba4Ti10Al2O27. The intergranular phase and Ba4Ti10Al2O27 are also shown to exhibit strong structural similarities. Effects of the interfaces on AGG are proposed. (C) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[zheng, s. j. ; yamamoto, t. ; ikuhara, y.] japan fine ceram ctr, nanostruct res lab, nagoya, aichi 4568587, japan. [zheng, s. j. ; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [yamamoto, t.] nagoya univ, dept mat sci, nagoya, aichi 4648601, japan. [ikuhara, y.] univ tokyo, inst engn innovat, tokyo 1138656, japan. ; zheng, sj (reprint author), japan fine ceram ctr, nanostruct res lab, nagoya, aichi 4568587, japan. ; sjzhengsj@gmail.com
关键词	Abnormal Grain Growth Grain Boundary Intergranular Phase Ba4ti10al2o27 Batio3 Subsolidus Phase-relations Oxygen Partial-pressure Doped Barium-titanate Plane Reentrant Edge Boundary Structure Interface Structure Excess Batio3 Ceramics Behavior System
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71725
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. J. Zheng,X. L. Ma,T. Yamamoto,et al. Atomistic study of abnormal grain growth structure in BaTiO3 by transmission electron microscopy and scanning transmission electron microscopy[J]. Acta Materialia,2013,61(7):2298-2307.
APA	S. J. Zheng,X. L. Ma,T. Yamamoto,&Y. Ikuhara.(2013).Atomistic study of abnormal grain growth structure in BaTiO3 by transmission electron microscopy and scanning transmission electron microscopy.Acta Materialia,61(7),2298-2307.
MLA	S. J. Zheng,et al."Atomistic study of abnormal grain growth structure in BaTiO3 by transmission electron microscopy and scanning transmission electron microscopy".Acta Materialia 61.7(2013):2298-2307.