Relationship between microstructural evolution and electric properties of B2O3–CaCu3Ti4O12 composite ceramics

被引：0

作者：

Wen-Xiang Yuan

Z. J. Li

C. D. Wang

机构：

[1] Shenzhen University,College of Chemistry and Chemical Engineering

[2] The Hong Kong University of Science and Technology,Department of Civil and Environmental Engineering

[3] The City University of Hong Kong,Department of Physics and Materials Science

来源：

Journal of Materials Science: Materials in Electronics | 2012年 / 23卷

关键词：

B2O3; Nonlinear Coefficient; CCTO Ceramic; Boric Oxide; Breakdown Electric Field;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Calcium copper titanate (CaCu3Ti4O12, CCTO) powder was mixed with boric oxide (B2O3) glassy phase up to 8% by weight to prepare the composite ceramics. The effects of B2O3 incorporation on the microstructures, electric and dielectric properties of CCTO ceramics have been systematically investigated. Adding B2O3 results in both the decrease of the CCTO grain size. These microstructural changes conjointly affect the dielectric constant. In addition, further B2O3 increase leads to its aggregation at grain boundaries. Meanwhile, the B2O3 addition reduces the nonlinear coefficient and influences the breakdown electric field.

引用

页码：1552 / 1557

页数：5

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