Microstructural and electrical properties of cordierite-based ceramics obtained after two-step sintering technique
| Autor: | Karel Maca, N. Djordjevic, Suzana Filipović, Vladimir B. Pavlović, Dragan I. Olcan, Martin Kachlik, Darko Kosanović, Antonije Djordjevic, Nina Obradović |
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| Rok vydání: | 2016 |
| Předmět: |
Materials science
microstructure Sintering Cordierite 02 engineering and technology Dielectric engineering.material lcsh:Chemical technology 01 natural sciences Mechanical activation mechanical activation Materials Chemistry lcsh:TP1-1185 Electrical measurements Ceramic Composite material Microstructure Ball mill cordierite Two-step sintering two-step sintering Metals and Alloys 021001 nanoscience & nanotechnology Condensed Matter Physics 010406 physical chemistry 0104 chemical sciences visual_art electrical properties Electrical properties Ceramics and Composites engineering visual_art.visual_art_medium Dissipation factor 0210 nano-technology |
| Zdroj: | Science of Sintering, Vol 48, Iss 2, Pp 157-165 (2016) Science of Sintering. 2016, vol. 48, issue 2, p. 157-165. Science of Sintering |
| ISSN: | 1820-7413 0350-820X |
| DOI: | 10.2298/sos1602157o |
| Popis: | Cordierite-based ceramic materials are attracting much interest for their various applications in industry, for manufacturing multilayer circuit boards, catalytic converters, filters, thermal insulation, kiln furniture, components of portable electronic devices, etc. In order to reduce production costs and modify cordierite-based materials, mechanical activation can be used. In this study, microstructural and electrical properties of mechanically activated MgO-Al2O3-SiO2 system have been analyzed. The mixtures of MgO-Al2O3-SiO2 powders were mechanically activated in a planetary ball mill for the time periods from 0 to 160 min. Morphological investigations have been performed on the obtained powders. The effects of activation and two-step sintering process on microstructure were investigated by scanning electron microscopy (SEM). Electrical measurements showed variations of the dielectric constant (er) and loss tangent (tan δ) as a function of time of mechanical treatment. |
| Databáze: | OpenAIRE |
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