Title :
Dielectric breakdown and partial discharge in BaTiO3 ceramics
Author :
Shin, Byoungchul ; Kim, Ho-Gi
Abstract :
The possibility of a correlation between partial discharge characteristics, breakdown strength, and microstructure of the ferroelectric ceramics is investigated. Breakdown field and partial discharge inception field were measured for pure BaTiO3 ceramics with different pore size distributions. The BaTiO3 ceramics used in this study were sintered at either 1300°C, 1350°C, 1400°C, or 1450°C, which varied the pore size distribution only. The pore size of the barium titanate ceramics was found to increase with sintering temperature. The breakdown field and partial discharge inception field decreased with increase of sintering temperature, which is attributed to the large pore size in high-temperature-sintered specimens, the dielectric breakdown being caused by partial discharge within large pores
Keywords :
barium compounds; ceramics; electric breakdown of solids; ferroelectric materials; partial discharges; sintering; 1300 degC; 1350 degC; 1400 degC; 1450 degC; BaTiO3; breakdown strength; ferroelectric ceramics; microstructure; partial discharge characteristics; pore size distributions; sintering temperature; Ceramics; Dielectric breakdown; Dielectric measurements; Electric breakdown; Ferroelectric materials; Microstructure; Partial discharge measurement; Partial discharges; Size measurement; Temperature;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1989., Proceedings of the 3rd International Conference on
Conference_Location :
Trondheim
DOI :
10.1109/ICSD.1989.69244
