Low-temperature sintering and dielectric properties of high-permittivity microwave (Ca, Nd)TiO_3 ceramics

摘要

The effect of H_3BO_3-CUO-Li_2CO_3 combined additives on the sintering temperature, microstructure and microwave dielectric properties of (Ca_(0.61)Nd_(0.26)) (Ti_(0.98)Sn_(0.02))O_3 (CNTS) ceramics was investigated. The H_3BO_3-CUO-Li_2CO_3 combined additives lowered the sintering temperature of CNTS ceramics effectively from 1300 to 950 °C. This may be due to the interim liquid-phase of Li_2O-CUO-B_2O_3, which were formed in the sintering process. (Li_(0.5)Nd_(0.5))TiO_3 (LNT) demonstrated an effective compensation in ?_f value of the low-fired CNTS ceramics.