Processing, structural and humidity sensing properties of PbTiO3 ceramic synthesized by solid state reaction
| Autor: | Giuseppe Viola, Abd El-razek Mahmoud, Monica Ferraris, Afaf M. Babeer, Ahmed S. Afify |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering Sintering Mineralogy 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Ferroelectricity 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Mechanics of Materials visual_art Phase (matter) Differential thermal analysis visual_art.visual_art_medium General Materials Science Relative humidity Ceramic Lead titanate 0210 nano-technology Perovskite (structure) |
| Zdroj: | Journal of Porous Materials. 27:947-958 |
| ISSN: | 1573-4854 1380-2224 |
| DOI: | 10.1007/s10934-016-0315-8 |
| Popis: | Perovskite lead titanate PbTiO3 (PT) powder and ceramics were synthesized using solid state reaction technique. The PT single phase powder was detected by X-ray diffraction where the phase obtained by sintering at 700 °C for 2 h. Morphology of the ceramics powder were studied using SEM–EDS. It was found that the particle size tend to increase with increasing sintering temperature. Hot stage microscope has been used to investigate the sintering curve of the calcined powder. The pure calcined powder was prepared as humidity sensors by the screen-printing technique. Thereafter, DC resistance measurements were performed in the presence of relative humidity at room temperature where the powder shows a poor sensitivity towards relative humidity. The phase transition from ferroelectric to paraelectric was identified by differential thermal analysis, and was detected at 493 °C. The difference between using alumina and platinum crucibles during processing has been discussed. |
| Databáze: | OpenAIRE |
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