Thermal and electrical properties of BaO–B 2O 3–ZnO glasses

Abstract

Glasses in the BaO–ZnO–B 2O 3 system were examined as potential replacement for PbO glass frits with low firing temperature (500–600 °C) for the dielectric layer of a plasma display panel (PDP). The glasses were evaluated for glass transition temperature ( T g), thermal expansion coefficient ( α) and dielectric constant ε. The electrical and the thermal properties were also compared with theoretical data calculated by a known empirical equation. T g of the glasses varied between 480 and 560 °C, and α was in the range of 7–9×10 −6 K −1. The dielectric constant ranges from 14 to 19 and the theoretical data showed lower α and ε than the experimental data. The results suggest that BaO–ZnO–B 2O 3 glasses would be suitable as an alternative to Pb-based dielectric layer in PDPs.