Enhanced microwave-assisted sintering of X7R ceramic dielectrics for use in multilayer capacitors

被引：6
作者：
McInroy, A. B. [1 ]
Rowley, A. T. [2 ]
Freer, R. [1 ]
机构：
[1] Univ Manchester, Ctr Mat Sci, Manchester M1 7HS, Lancs, England
[2] C Tech Innovat, Chester CH1 6EH, Cheshire, England
来源：
CERAMICS INTERNATIONAL | 2010年 / 36卷 / 06期
关键词：
Microwave processing; Capacitor; BaTiO3; Dielectric; ELECTRICAL-PROPERTIES; BATIO3; CERAMICS; BARIUM-TITANATE; FIELD;
D O I：
10.1016/j.ceramint.2010.05.003
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
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 degrees C. Enhanced sintering has been observed in the form of accelerated densification when a microwave field is applied. At 1090 degrees 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, similar to 2200, typically 10%, higher than for conventionally sintering. The Curie temperature was lower by 5 degrees C in the microwave heated samples. (C) 2010 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
引用
收藏
页码：2007 / 2010
页数：4
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