Subsolidus phase equilibria in the PbO-poor part of the TiO2-PbO-SiO2 system and its application in low-temperature thick-film dielectrics
Hrovat, Marko ; Maeder, Thomas ; Jacq, Caroline ; Holc, Janez ; Bernard, Janez
In: Journal of Materials Research, 2006, vol. 21, no. 12, p. 3210-3214
Ajouter à la liste personnelle- Summary
- Subsolidus equilibria in the PbO-poor part of the TiO2-PbO-SiO2 diagram were studied with the aim of investigating possible applications for low-temperature thick-film dielectrics. The tie lines are between PbTiO2 and PbSiO3, and between PbTiO3 and SiO2. The results show that the TiO2, when added to low-temperature softening point glasses, reacts with the PbO from the glass, so forming PbTiO3. These results were applied to a low-temperature firing dielectric, consisting of a lead-rich PbO-SiO2-B2O3 glass filled with a TiO2 powder. The conversion of TiO2 to the PbTiO3 crystalline phase was observed above firing temperatures of approximately 600 °C. The kinetics of the reaction depend on the particle size of the TiO2