ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 24    No. 3    March 2014

Crystallization kinetics and temperature dependence of energy storage properties of niobate glass-ceramics
Tao-yong LIU1, Guo-hua CHEN1,2, Jun SONG1, Chang-lai YUAN1,2
(1. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China;
2. Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology,
Guilin 541004, China
)
Abstract: Glass-ceramic materials of strontium barium niobate system were prepared through a melt-quenching method. The effects of crystallization temperature on the microstructure, dielectric property, breakdown strength and energy storage density of barium strontium niobate glass-ceramics were studied. The crystallization mechanism of the glass-ceramics was discussed and should be one-dimensional interfacial growth. The results indicate that the breakdown strength remarkably increases with the increase of crystallization temperature. The glass-ceramic heat treated at 900 °C was found to possess optimal properties with breakdown strength of 1300 kV/cm and energy storage density of 2.8 J/cm3, which is promising dielectric materials for high energy storage density dielectrics.
Key words: glass-ceramics; dielectrics; crystallization; electrical properties
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)