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Effect of grain growth control on PZT properties

Abstract:

Lead Zirconate Titanate (PZT) ceramic powders with morphotropic phase boundary composition were processed following the reactive calcination method from zirconium titanate and PbO. The powders so obtained have different porosity distribution with an average particle size of ~0.3 μ m. The porosity distribution of the powder was modified by both physical and chemical processes. The porosity distribution of the ceramic powders was modified by high shear stress process of PZT slips. The modification of the interparticle porosity and the chemical adsorption of esther phosphate on the particle surface allow grain growth to be controlled. The ferroelectric, dielectric and piezoelectric properties of sintered material were measured and correlated with the ceramic processing. © 2002 Taylor & Francis.