Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1462961 | Ceramics International | 2010 | 4 Pages |
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.
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Ceramics and Composites
Authors
A.B. McInroy, A.T. Rowley, R. Freer,