J. Phys. IV France 128 (2005) 27-31
DOI: 10.1051/jp4:2005128005
Water-based technique to produce porous PZT materials
C. Galassi1, C. Capiani1, F. Craciun2 and E. Roncari11 ISTEC-CNR, Via Granarolo 64, Faenza, Italy
2 CNR-Istituto dei Sistemi Complessi, Via del Fosso del Cavaliere 100, 00133 Rome, Italy
Abstract
Water based colloidal processing of PZT materials was
investigated in order to reduce costs and employ more environmental friendly
manufacturing. The technique addressed was the production of porous thick
samples by the so called "starch consolidation". PZT "soft" compositions
were used. The "starch consolidation" process allows to obtain the green
body by raising the temperature of a suspension of PZT powder, soluble
starch and water, cast into a metal mould. The influence of the processing
parameters and composition on the morphology, pore volumes, pore size
distributions and piezoelectric properties are investigated. Zeta potential
determination and titration with different deflocculants were essential
tools to adjust the slurry formulation.
© EDP Sciences 2005