Effects of Mg4Nb2O9 Ceramic Dielectric Modify Agent in Low Temperature Co-fired Ceramic Tape

• Main Authors: Yu-Ting Wang, 王俞婷
• Other Authors: Pang Lin
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/67260512866183725268

碩士 === 國立交通大學 === 材料科學與工程系所 === 94 === In this study, two commercial glass, ZnO–B2O3–SiO2 (NEG Ltd., GP5210) and B2O3–SiO2 (NEG Ltd., GA50), were used to improve the sintering and dielectric property of Mg4Nb2O9 ceramic. The interaction between GP5210 and Mg4Nb2O9 resulted in the crystallization phase and superlattice structure. Further investigations indicated that the superlattice structure had greatly contributed to the microwave dielectric property. The optimized microwave dielectric properties of Mg4Nb2O9 /80wt % GP5210 were εr = 6.63, Q = 2855.9(9 GHz), τf = -16.72 ppm/℃.Compared to GP5210 / Mg4Nb2O9, there was no interaction between GA50 and Mg4Nb2O9. The optimized microwave dielectric properties of Mg4Nb2O9 / 80wt%GA50 were εr = 4.45，Q = 1788.4(9 GHz) ，τf = -16.89 ppm/℃. The optimized microwave dielectric properties of the LTCC Tape for B2O3–SiO2 glass system were εr = 4.253，Q = 12388.3 (15 GHz), and for ZnO–B2O3–SiO2 glass system were εr = 6.627, Q=19531.5 at 15GHz by Open Reasonator. The low-temperature sintering tape had appreciate dielectric properties, therefore, were suitable for LTCC application.