Title :
Effects of ZrO2 powder on sintering of PZT ceramics
Author :
Tashiro, S. ; Kotani, Y. ; Igarashi, H. ; Kidaka, K. ; Fukai, K.
Author_Institution :
Dept. of Electr. Eng., Nat. Defense Acad., Yokosuka, Japan
Abstract :
PZT 53/47 ceramics were fabricated from four kinds of zirconium oxide powder to clarify the effects of raw powders on the densification, grain growth and piezoelectric properties from the viewpoint of low-temperature sintering. Two types of ZrO2 powder which were different in terms of specific surface area and two types of Zr0.53Ti0.47O2 powder which were different in terms of Nb dopant were used as the starting materials. By adjusting the calcining and grinding conditions appropriately, dense ceramics were obtained at a lower firing temperature than 1000°C. Among the four kinds of powder, the calcined powder started from (Zr,Ti)O2 powder doped with Nb2O5 densified at the lowest temperature, 800°C. The calcined powder started from (Zr,Ti)O2 doped with Nb ion was satisfactorily sintered at 950°C to fine-grained ceramics of 0.6 μm in average grain size and 0.6 in planar coupling factor
Keywords :
ceramics; densification; ferroelectric materials; grain growth; piezoelectric materials; powder technology; sintering; 800 to 1000 degC; PZT; PbZrO3TiO3; ZrO2 powder; calcining; ceramics; densification; ferroelectric; firing temperature; grain growth; grinding conditions; low-temperature; piezoelectric properties; planar coupling factor; sintering; specific surface area; Ball milling; Calcination; Ceramics; Firing; Grain size; Land surface temperature; Magnesium compounds; Powders; Solid state circuits; Zirconium;
Conference_Titel :
Applications of Ferroelectrics, 1990., IEEE 7th International Symposium on
Conference_Location :
Urbana-Champaign, IL
Print_ISBN :
0-7803-0190-0
DOI :
10.1109/ISAF.1990.200314
