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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
Source PublicationActa Materialia
ISSN1359-6454
Volume61Issue:7Pages:2298-2307
AbstractAn 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.
description.department[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
KeywordAbnormal 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
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71725
Collection中国科学院金属研究所
Recommended Citation
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.
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