Abstract:In the present article, the phase evolution, crystal structure and microwave dielectric properties of ZnO B2O3 SiO2 (abbreviated as ZBS) glass doped Ca[(Li1/3Nb2/3)0.95Zr0.15]O3+δ (abbreviated as CLNZ) ceramic are investigated. XRD and SEM data indicate that single phase and dense CLNZ ceramic can be obtained at 940 ℃ by ZBS glass doping, however, when the doping content exceeds 10%, the Ca2Nb2O7 type pyrochlore phase begins to appear. The ZBS vitreous phase segregates at the grain boundary of final CLNZ ceramic, which indicates it acts as liquid lubrication during sintering and effectively lowered the sintering temperature of CLNZ ceramic from 1 170 ℃ to 940 ℃. Moreover, the crystal orientation evolved from (121) plane to (101) plane as the increase of ZBS glass content or sintering temperature. Under the optimal sintering condition, εr= 32.0,Q·f = 6 640 GHz and τf= 27.1 μ℃-1 microwave properties can be obtained in 15% ZBS glass doped CLNZ ceramic. What's more,the ZBS doped CLNZ ceramic has no reactions with Ag metal, which indicates itself a great potential applications in LTCC industry.