Phase Stability and Dielectric Properties of Low Temperature Fired BaTi4O9 Microwave Material with Copper Electrodes in Reducing Atmosphere

Author:

Chen Cheng Sao1,Chen Pin Yi2,Chou Chen Chia3,Feng Kuei Chih3,Chu Li Wen4

Affiliation:

1. Hwa-Hsia Institute of Technology

2. Ming-Chi University of Technology

3. National Taiwan University of Science and Technology

4. Walsin Technology Corporation

Abstract

In this study we report sintering behavior and microstructures of glass-added BaTi4O9microwave dielectric ceramics with copper paste in reducing atmosphere. Experimental results show a buffer layer may form at the interface of Cu-electrode and BaTi4O9microwave dielectric ceramics if the glass did not diffuse smoothly during sintering, and therefore materials exhibited different colors. X-ray results indicate that Cu reacted with Ba seriously to form complicated reaction products, and some BaTi4O9transformed to barium titanate with various ration of Ba/Ti, which may degrade the dielectric properties of materials.

Publisher

Trans Tech Publications, Ltd.

Subject

General Engineering

Reference15 articles.

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2. C. F. Yang and S. H. Lo, J. Mater. Sci. Letters. 17 (1998) 1029.

3. J. A. Lee, J. H. Lee and J. J. Kim, J. Euro. Ceram. Soc. 26 (2006) 2135.

4. J. B. Lim, S. Nahm, H. T. Kim, J. H. Kim, J. H. Paik and H. J. Lee, J. Electroceram. 17 (2006) 393.

5. N. Sakamoto, T. Motoki and H. Sano, U.S. Patent 6233134. (2001).

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