Crystallization kinetics and dielectric properties of barium strontium titanate based glass-ceramics

IMR OpenIR

	Crystallization kinetics and dielectric properties of barium strontium titanate based glass-ceramics
	J. C. Chen; Y. Zhang; C. S. Deng; X. M. Dai
	2010
发表期刊	Materials Chemistry and Physics
ISSN	0254-0584
卷号	121 期号:1-2 页码:109-113
摘要	The crystallization kinetics in the glass system BaxSr(1-x)TiO(3)-Al(2)O(3)-SiO(2) prepared via the conventional melt-quenching technique has been studied by isothermal method using differential scanning calorimetry (DSC). X-ray powder diffraction studies carried out on heat-treated (850-1100 degrees C) glasses reveal the evolution of BaxSr(1-x)TiO(3) crystalline phase along with a second phase of BaAl(2)Si(2)O(8). The exponent n in the Johnson-Mehl-Avrami (JMA) equation applied to the isothermal process is in the range of 2.3-2.73. The apparent activation energy for Ba(x)Sr(1-x)TiO(3) crystal growth obtained from JMA equation under isothermal condition is 457 kJ mol(-1), which is close to the dissociation energy of Si-O bonds. Moreover, there is no remarkably different effect between one-stage and two-stage heat treatment procedures on the microstructures and dielectric properties of barium strontium titanate based glass-ceramics in the present study, according to structure-property analysis. (C) 2010 Elsevier B.V. All rights reserved.
部门归属	[chen, jichun] chinese acad sci, shenyang res & dev ctr adv mat, inst met res, shenyang 110016, peoples r china. [zhang, yong; deng, changsheng; dai, xiaming] tsinghua univ, beijing fine ceram lab, state key lab new ceram & fine proc, inst nucl & new energy technol, beijing 100084, peoples r china.;chen, jc (reprint author), chinese acad sci, shenyang res & dev ctr adv mat, inst met res, 72 wenhua rd, shenyang 110016, peoples r china;jchchen@imr.ac.cn yzhang@tsinghua.edu.cn
关键词	Glasses Crystallization Differential Scanning Calorimetry (Dsc) Dielectric Properties Microstructure Borosilicate Glass Phase-change Microstructure Behavior System Liquids
URL	查看原文
WOS记录号	WOS:000276938100021
引用统计	被引频次：39[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31025
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. C. Chen,Y. Zhang,C. S. Deng,et al. Crystallization kinetics and dielectric properties of barium strontium titanate based glass-ceramics[J]. Materials Chemistry and Physics,2010,121(1-2):109-113.
APA	J. C. Chen,Y. Zhang,C. S. Deng,&X. M. Dai.(2010).Crystallization kinetics and dielectric properties of barium strontium titanate based glass-ceramics.Materials Chemistry and Physics,121(1-2),109-113.
MLA	J. C. Chen,et al."Crystallization kinetics and dielectric properties of barium strontium titanate based glass-ceramics".Materials Chemistry and Physics 121.1-2(2010):109-113.