SHAO  Hui, ZHOU Hongqing, FANG Liang ,WEI Pengfei

(College of Material Science & Engineering, Nanjing University of Technology, Nanjing 210009)

Abstract: The densification process, phase shift, microstructure and dielectric properties of CABS/ Al₂O₃ prepared by ball grinding method were studied. The results show that with the increase of the milling time, the glass particles became finer and their densification temperatures were lower. If the particles were overground, sintered materials would have looser structure and greater dielectric losses. The glass-ceramics obtained at 850℃, which have the εr of 7.8 and the tanδ of less than 1×10^-4, can be used as promising LTCC materials.

Keywords: LTCC, glass frits, CaO-B₂O₃-Al₂O₃-SiO₂, sintering