METAL-ORGANIC RESIN DERIVED BARIUM-TITANATE .1. FORMATION OF BARIUM TITANIUM OXYCARBONATE INTERMEDIATE

被引：176

作者：

KUMAR, S ^{[1
]}

MESSING, GL ^{[1
]}

WHITE, WB ^{[1
]}

机构：

[1] PENN STATE UNIV,MAT RES LAB,UNIV PK,PA 16802

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 1993年 / 76卷 / 03期

关键词：

D O I：

10.1111/j.1151-2916.1993.tb03650.x

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Crystallization of BaTiO3 from an X-ray amorphous, metal organic precursor was investigated by comparing samples heated in O2, air, argon, and CO2. It is evident that an intermediate barium titanium oxycarbonate phase forms between 500-degrees and 620-degrees-C and that BaTiO3 forms directly by the endothermic decomposition of this phase between 635-degrees and 700-degrees-C. From thermodynamic calculations, thermal analysis, X-ray diffraction, and Raman spectroscopy, it is concluded that the intermediate oxycarbonate is a highly disordered, metastable, and weakly crystalline phase with a stoichiometry close to Ba2Ti2O5CO3.

引用

页码：617 / 624

页数：8

共 24 条

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