Development and dielectric properties of ceramic matrix composite, strontium titanate and kaolinite /
Pellets of Strontium Titanate (SrTiO3) and kaolin compositions have been synthesized by conventional solid state reaction. The dielectric properties of these perovskite pellets were then studied at frequencies 10Hz to 1MHz using HP 4192A LF Impedance Analyzer, measured at different temperature 230C,...
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| Format: | Thesis Book |
| Language: | English |
| Published: |
2008.
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| Summary: | Pellets of Strontium Titanate (SrTiO3) and kaolin compositions have been synthesized by conventional solid state reaction. The dielectric properties of these perovskite pellets were then studied at frequencies 10Hz to 1MHz using HP 4192A LF Impedance Analyzer, measured at different temperature 230C, 300C, 500C to 4000C at 500C interval. They were also measured at 1MHz to 1.8GHz using 4291B RF Impedance Analyzer at room temperature. The result shows that dielectric constant, ε′ and dielectric loss, ε″ decreases as frequency increases. Both dielectric constant, ε′ and dielectric loss, ε″ are temperature dependence. The dielectric behaviors of these materials were contributed by ionic, dipoles and space charge polarizations. Comparison of dielectric properties among seven samples have been done and experimental results showed that the 70%ST has the highest dielectric constant, ε′. For samples 10%ST, 20%ST and 30%ST the difference of dielectric constant, ε′ between 1GHz and 1.8 GHz can be negligible. |
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| Physical Description: | 78 leaves : ill. ; 30cm. |