Processing and microstructure of porous and dense PZT thick films on Al2O3 |
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| Authors: | J. F. Fernandez E. Nieto C. Moure P. Duran R. E. Newnham |
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| Affiliation: | (1) Electroceramics Department, Instituto de Ceramica y Vidrio, CSIC, 28500 Arganda del Rey, Madrid, Spain;(2) Materials Research Laboratory, Pennsylvania State University, 16802 University Park, PA, USA |
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| Abstract: | The processing of porous PZT thick-film ceramics on Al2O3 has been studied. The films were screen-printed from a thixotropic ink of PZT with a 58% solids content. The thick films were sintered between 1000 and 1150°C for 2 h. The sintered films show a 10  m thickness and an average pore diameter ranging from 1–2 m. The PZT forms a continuous skeleton that can be filled with the desired polymer. Dense and continuous PZT films were fabricated by screen-printing PZT ink on previously electroded Al2O3 substrates with Ag/Pd 70/30 paste. Densification of the PZT was obtained by sintering near the liquidus temperature of the Ag-Pd system. |
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