http://www.cnr.it/ontology/cnr/individuo/prodotto/ID43346
PZT prepared by Spray Drying: from powder synthesis to electromechanical properties (Articolo in rivista)
- Type
- Label
- PZT prepared by Spray Drying: from powder synthesis to electromechanical properties (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1016/j.jeurceramsoc.2004.08.027 (literal)
- Alternative label
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
- Federica Bezzi; Anna Luisa Costa; Daniele Piazza; Andrea Ruffini; Stefania Albonetti; Carmen Galassi (literal)
- Pagina inizio
- Pagina fine
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
- http://www.sciencedirect.com/science/article/pii/S0955221904004005 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
- Rivista
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
- Note
- ISI Web of Science (WOS) (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
- Costa, Piazza, Ruffini, Galassi: Istituto di scienza e tecnologia dei materiali ceramici
Bezzi, Albonetti: Univ Bologna, Fac Ind Chem, I-40126 Bologna, Italy (literal)
- Titolo
- PZT prepared by Spray Drying: from powder synthesis to electromechanical properties (literal)
- Abstract
- A PZT niobium-doped material (PZTN) was developed from precursor powders obtained by spray drying of water solution of Zr and Pb nitrates, Ti isopropoxide and Nbammonium complex. The thermo-oxidative process as well as the phase evolution were analysed. The morphology of powders was investigated as a function of the spray-drying conditions. The stoichiometry of the systems was checked at each stage of the process and no fluctuation was detected. The obtained powders had a spherical, hollow and porous structure and were transformed into a pure perovskite phase at 550 æC. The samples, sintered at 1100 æC for 2 h in air showed 98% relative density at densification temperature of 100 æC lower than following the conventional mixed oxide route. The green and final densities were improved by introducing a grinding step and high pressure cold isostatic consolidation. Some sintered samples were fully densified by hot isostatic pressing (1100 æC,
300 bars) post-treatment, obtaining pore free structures. The electrical characterisation showed comparable or better properties than those obtained with the mixed oxide method. (literal)
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