LIU Ming, XU Xiaoying, WANG Xiaofeng, YANG Gangbin, ZHAO Yuezhi, AN Ziqi, ZHU Xiaoxue, LIU Jinghua
(School of Materials Science and Engineering, Luoyang Institute of Science and Technology, Luoyang 471023, Henan, China)
Abstract: Glass/oxide composites, consisting of Ca-Ba-Mg-Al-B-Si-O glass and various oxides (Al2O3, TiO2, ZrO2 and SiO2), were prepared by using a low-temperature sintering method. The property-composition relationship of the Ca-Ba-Mg-Al-B-Si-O glass/oxide was studied, in terms of sintering behavior and dielectric properties. It was demonstrated that different oxides had different effects on sintering, thermal and dielectric properties of Ca-Ba-Mg-Al-B-Si-O glass/oxide composites. The presence of Al2O3 promoted densification of glass/oxide composites, while the addition of SiO2 reduced dielectric constant of the ceramics. Specifically, the Ca-Ba-Mg-Al-B-Si-O glass/Al2O3 sample sintered at 875 ℃ exhibited a bulk density of 3.10 g•cm-3, a dielectric constant of 8.03 at 10 MHz, a dielectric loss of 0.0005, making it potential candidate for low-temperature co-fired ceramics.
Key words: Ca-Ba-Mg-Al-B-Si-O glass; oxide; sintering behvior; dielectric properties