Abstract: Li2Zn3Ti4O12 (LZT) ceramics doped with H3BO3 addition were prepared using conventional solid-state reaction method.X-ray diffraction,scanning electron microscopy,the drainage method and dielectric measurements were introduced to investigate the phase, microstructure, sintering behavior and microwave dielectric properties of the LZT specimens with different amounts of H3BO3.The results show that the Li2Zn3Ti4O12 ceramics sintered at 900 ℃ with 3wt% H3BO3 for 2 h shows high density and good microwave dielectric properties(ρ=4.15 g/cm3,εr=17.916,Q×f=61200 GHz,Tf=-52.87×10-6/℃).

Key words: microwave dielectric ceramics;Li2Zn3Ti4O12 ceramics;H3BO3;low temperature sintering