制备Li2CO3-V2O5(LV)共掺杂0.6Mg4Nb2O9-0.4SrTiO3复合陶瓷,研究了LV掺杂对其烧结特性、相结构和微波介电性能的影响.结果表明:一定量LV掺杂使0.6Mg4Nb2O9-0.4SrTiO3复合陶瓷生成了Sr(NbTi)O3+δ和MgO杂相,并使其致密化烧结温度降低(至1175℃);1.5%LV掺杂,在1175℃烧结5 h的样品具有较高的微波介电性能:Tf=0.15 ppm/℃,Er=20.1,Q·f=10240 GHz(at 8.5 GHz).
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