@article{WANG2021, 
author = {Haiquan WANG and Shixuan LI and Kangguo WANG and Xiuli CHEN and Huanfu ZHOU},
title = {Sintering behaviour and microwave dielectric properties of MgO-2B2O3-xwt%BaCu(B2O5)-ywt%H3BO3 ceramics},
year = {2021},
journal = {Journal of Advanced Ceramics},
volume = {10},
number = {6},
pages = {1282-1290},
keywords = {sintering temperature, low-temperature co-fired ceramics (LTCC), MgO-2B2O3, H3BO3, microwave dielectrics, temperature coefficient of resonance frequency},
url = {https://www.sciopen.com/article/10.1007/s40145-021-0503-0},
doi = {10.1007/s40145-021-0503-0},
abstract = {This study investigates the bulk density, sintering behaviour, and microwave dielectric properties of the MgO-2B2O3 series ceramics synthesised by solid-state reaction. According to the X-ray diffraction and microstructural analyses, the as-prepared MgO-2B2O3 ceramics possess a single-phase structure with a rod-like morphology. The effects of different quantities of H3BO3 and BaCu(B2O5) (BCB) on the bulk density, sintering behaviour, and microwave dielectric properties of the MgO-2B2O3 ceramics were investigated. Accordingly, the optimal sintering temperature was obtained by adding 30 wt% H3BO3 and 8 wt% BCB. We also reduced the sintering temperature to 825 ℃. Furthermore, the addition of 40 wt% H3BO3 and 4 wt% BCB increased the quality factor, permittivity, and temperature coefficient of resonance frequency of MgO-2B2O3 to 44,306 GHz (at 15 GHz), 5.1, and -32 ppm/℃, respectively. These properties make MgO-2B2O3 a viable low- temperature co-fired ceramic with broad applications in microwave dielectrics.}
}