| Autor: | Steven J. Milne, S. Tangwiwat |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Materials science
Mineralogy Sintering General Chemistry Condensed Matter Physics Lead zirconate titanate Electronic Optical and Magnetic Materials law.invention Biomaterials chemistry.chemical_compound Chemical engineering chemistry law visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Mixed oxide Cubic zirconia Calcination Ceramic Sol-gel Lead oxide |
| Zdroj: | Journal of Sol-Gel Science and Technology. 16:151-157 |
| ISSN: | 0928-0707 |
| DOI: | 10.1023/a:1008729608661 |
| Popis: | A lead zirconate titanate (PZT) precursor sol was prepared by a diol sol-gel route and used as a binder for assisting the uniaxial die pressing of PZT powders. The powders, of composition Pb(Zr0.52Ti0.48) O3, were prepared by a two step mixed oxide route using lead carbonate, zirconia and titania starting powders. The densification characteristics of the powders, which were not milled after the final calcination step, were compared to samples prepared using PVA as a conventional binder. Improved sintering behaviour was observed for the novel sol-gel binder system. For example, using a sol concentration, equivalent to 7 wt% of PZT derived from the binder, pellets of 95% theoretical density were obtained after firing at 1150°C for 4 h, whereas for the same firing conditions, samples blended with PVA resulted in a density of only 78% theoretical. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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