Enhanced microwave-assisted sintering of X7R ceramic dielectrics for use in multilayer capacitors
| Autor: | A.B. McInroy, Andrew T. Rowley, Robert Freer |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Process Chemistry and Technology Relative permittivity Sintering Dielectric Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Capacitor law visual_art Dielectric heating Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Ceramic Composite material Ceramic capacitor Microwave |
| Zdroj: | Ceramics International. 36:2007-2010 |
| ISSN: | 0272-8842 |
| Popis: | A hybrid furnace, allowing the simultaneous application of microwave (2.45 GHz) and radiant energy, has been used to investigate the sintering of a commercial X7R powder commonly used in multilayer capacitors. Samples were processed at temperatures in the range 1060–1120 °C. Enhanced sintering has been observed in the form of accelerated densification when a microwave field is applied. At 1090 °C for example, 99.4% dense material was obtained by microwave-assisted heating but only 96.9% density was reached by conventional heating. The relative permittivity of the microwave sintered material was ∼2200, typically 10%, higher than for conventionally sintering. The Curie temperature was lower by 5 °C in the microwave heated samples. |
| Databáze: | OpenAIRE |
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