Microwave dielectric properties of glass-ceramic composites for low temperature co-firable ceramics

2003 ◽  
Vol 23 (14) ◽  
pp. 2553-2558 ◽  
Author(s):  
Chung-Chin Cheng ◽  
Tsung-Eong Hsieh ◽  
I-Nan Lin
Keyword(s):  
Dielectric Properties ◽  
Low Temperature ◽  
Glass Ceramic ◽  
Microwave Dielectric Properties ◽  
Ceramic Composites ◽  
Microwave Dielectric

Microwave dielectric properties of glass–ceramic composites for low temperature co-firable ceramics

2003 ◽  
Vol 79 (2-3) ◽  
pp. 129-134 ◽  
Author(s):  
Cheng-Sao Chen ◽  
Chen-Chia Chou ◽  
Wei-Jan Shih ◽  
Kuo-Shung Liu ◽  
Chang-Shun Chen ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Low Temperature ◽  
Glass Ceramic ◽  
Microwave Dielectric Properties ◽  
Ceramic Composites ◽  
Microwave Dielectric

Microwave Dielectric Properties of LTCC Materials Consisting of BaO-TiO2-SiO2-Al2O3 Glass - BaNd2Ti5O14 Ceramic Composites

2005 ◽  
Vol 486-487 ◽  
pp. 506-509 ◽  
Author(s):  
Yu Jin Kim ◽  
Seong Jin Hwang ◽  
Hyung Sun Kim
Keyword(s):  
Dielectric Properties ◽  
Glass Ceramic ◽  
Microwave Dielectric Properties ◽  
Dielectric Materials ◽  
Ceramic Composites ◽  
Sintering Behavior ◽  
Shape Stability ◽  
Low Dielectric ◽  
Microwave Dielectric ◽  
Quality Factor Q

The desirable characteristics of the microwave materials include excellent dielectric constant εr, low dielectric loss (high quality factor, Q*f0 value), and small temperature coefficient (~0ppm/°C) of resonant frequency (Tf). The advantages of using a glass-ceramic include shape stability during the sintering stage, improved dielectric properties, mechanical strength, and controlled thermal expansivity. In the present study, glass-ceramic compositions consisting of a glass system (BaO-TiO2-SiO2-Al2O3) and a ceramic filer (BaNd2Ti5O14) were prepared. The glass and glass-ceramic compositions were evaluated for sintering behavior such as shrinkage, densities, thermal properties, and microstructures. In addition, the microwave dielectric properties (≈ 15~20 for εr, > 6000 GHz for Q*f0) were determined by a network analyzer at 6-8 GHz. These results suggest that the compositions can be a candidate for LTCC dielectric materials.

Microwave Dielectric Properties and its Compatibility with Silver of Glass-Ceramic Based on Co-Fire at Low Temperature

2013 ◽  
Vol 704 ◽  
pp. 167-172
Author(s):  
Hui Shao ◽  
Gang Jian
Keyword(s):  
Dielectric Properties ◽  
Low Temperature ◽  
Glass Ceramic ◽  
Sintering Temperature ◽  
Glass Ceramics ◽  
Microwave Dielectric Properties ◽  
Metal Electrode ◽  
Structural Development ◽  
Microwave Dielectric ◽  
Lower Temperature

Low temperature co-fired glass-ceramic-Ag metal electrode systems were investigated in relation to Ag diffusion and micro structural development during firing. Sintering temperature was in a range of 800°C-900°C. At lower temperature of 800°C, Ag ion was diffused through in the LTCC substrates. However, Ag diffusion was not observed at 850°C below. Simultaneously, the densification of the electrode was greatly improved. With increasing sintering temperature, glass-ceramic to the electrode does not occur due to increase of the densification of the sample. The glass-ceramics exhibited good dielectric properties: εr=7.74, tanδ=0.7×10-3 at 850°C for 0.5h.

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