Title :
PLZT powders from acetate precursors via coprecipitation
Author :
Lin, C. ; Lee, B.I. ; Haertling, G.H.
Author_Institution :
Dept. of Ceramic Eng., Clemson Univ., SC, USA
fDate :
30 Aug-2 Sep 1992
Abstract :
Various chemical coprecipitation techniques used for the production of PLZT (lead lanthanum zirconate titanate) 2/55/45 (La/Zr/Ti) powders were investigated. The coprecipitation condition corresponding to 0.5 M oxalic acid at a titration rate of 24 cc/min and at a temperature of 21°C yielded calcined powders with the largest surface areas. This condition was thus selected as the optimum one in regard to the sinterability of the powders. The characteristics of the PLZT 2/55/45 powders under the best precipitation condition were evaluated. FTIR (Fourier-transform infrared) spectroscopy and XRD (X-ray diffraction) showed that perovskite phase formation occurred at 550°C
Keywords :
Fourier transform spectra; X-ray diffraction examination of materials; ceramics; ferroelectric materials; heat treatment; infrared spectra of inorganic solids; lead compounds; powder technology; precipitation (physical chemistry); scanning electron microscope examination of materials; sintering; 21 C; 550 C; FTIR; Fourier transform infrared spectroscopy; PLZT powder; PbLaZrO3TiO3; SEM; X-ray diffraction; XRD; acetate precursors; calcined powders; chemical coprecipitation techniques; ferroelectric ceramic; oxalic acid; perovskite phase formation; sintering; titration rate; Chemical products; Infrared spectra; Lanthanum; Powders; Production; Spectroscopy; Temperature; Titanium compounds; X-ray scattering; Zirconium;
Conference_Titel :
Applications of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on
Conference_Location :
Greenville, SC
Print_ISBN :
0-7803-0465-9
DOI :
10.1109/ISAF.1992.300584
