Dielectric Behavior of Barium Titanate/Carbon Fibers Composites
| Autor: | Pei Tao Xie, Kai Sun, Xin Yan Li, Guo Hua Fan, Runhua Fan, Chuan Xin Hou, Zhong Yang Wang, Xiang Zhang |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Mechanical Engineering Dc conductivity 02 engineering and technology Dielectric 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Mechanics of Materials Barium titanate General Materials Science Composite material 0210 nano-technology |
| Zdroj: | Materials Science Forum. 898:2101-2106 |
| ISSN: | 1662-9752 |
| DOI: | 10.4028/www.scientific.net/msf.898.2101 |
| Popis: | Conductor–insulator composites have been extensive researched for high dielectric constant. Most of them concentrated on metal polymers or metal ceramics. Barium titanate–carbon fibers composites were prepared by using a solid state reaction process with carbon fibers contents ranging from7 vol% to 23 vol%. Due to the high-aspect-ratio of carbon fiber, it was easy to produce a conducting network at much lower volume fraction. FESEM images illustrated that the carbon fibers influenced the densification and microstructure of the ceramics. Besides, addition of carbon fibers led to increase in dielectric permittivity, also had effects on the dielectric loss and ac conductivity. The dielectric and conductivity properties as a function of carbon fibers volume fraction were explained by the percolation theory. |
| Databáze: | OpenAIRE |
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