Abstract
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. © 2010 Elsevier Ltd and Techna Group S.r.l.
Original language | English |
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Pages (from-to) | 2007-2010 |
Number of pages | 3 |
Journal | Ceramics International |
Volume | 36 |
Issue number | 6 |
DOIs | |
Publication status | Published - Aug 2010 |
Keywords
- A. Microwave processing
- BaTiO3
- Dielectric
- E. Capacitor