Volume : IV, Issue : III, March - 2015

Low temperature sintering of sol–gel derived PZT ceramics

Sarika Soni, Arvind Bajaj, Manisha Chawla, M. Fahim

Abstract :

Lead zirconate titanate (PbZr0.52Ti0.48O3) nanocrystalline powder and ceramics were synthesized using a low temperature chemical sol–gel route in the laboratory. The main objective of the present work was to reduce the sintering temperature of PZT ceramics to below 1000oC without compromising on the density, dielectric and piezoelectric properties of the material. PZT powder was synthesized using a sol–gel route using acetate method. As–fired amorphous powder was annealed at two different temperatures at 450oC and 550oC respectively. These powders were co–doped with a novel sintering aid (a mixture of Li2CO3, Nb2O5 and MnO2). The resulting powder was then cold–pressed into pellets and sintered below 1000oC ( for 2 hours). These pellets were used for further characterization. Structural characterization of powder done using FTIR spectroscopy revealed the existence of TiO6 octahedral peaks. X–ray diffractograms revealed polycrystalline nature of the ceramics. Positive effect of adding novel sintering aids to lower the sintering temperature and densification of PZT ceramics was reflected as an improvement in the temperature and frequency dependent dielectric properties of ceramics. Scanning electron micrographs showed formation of dense ceramic at low sintering temperature.

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Article: Download PDF   DOI : 10.36106/ijsr  

Cite This Article:

Sarika Soni, Arvind Bajaj, Manisha Chawla, M. Fahim Low temperature sintering of sol-gel derived PZT ceramics International Journal of Scientific Research, Vol : 4, Issue : 3 March 2015

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