研究了 B位 Zr掺杂对 (Pb0.45Ca0.55)(Fe1/2Nb1/2)O3 (PCFN)陶瓷的烧结行为、微观结构及微波 介电性能的影响。试验结果表明 ,PCFNZ陶瓷能在相对较低的温度下烧结 (12000C/2h),在 x=0.025 时 ,有较高的 Q· f值 ,它的微波介电性能 :Q· f=9828GHz,ε r=91,τ f=9ppm/0C,用这种材料做成的 带通滤波器在中心频率为 928.4MHz下 ,插入损耗为 2.469dB,满足插入损耗应小于 3dB的要求。
In present work, the sintering behavior, microwave dielectric properties as well as microstruc－ ture of Zr－ substituted solid solution with general formula (Pb0.45Ca0.55)(Fe1/2Nb1/2)O3 (PCFN) were investigated. The experimental results show that these ceramics can be sintered at a relatively low tem－ perature of 12000C/2h. The PCFNZ ceramics at x=0.025 has excellent dielectric properties at micro－ wave frequency: Q· f=9828GHz, ε r=91,τ f=9ppm/0C. The insertion loss of two－ hole band pass filter made of PCFNZ ceramics at the center frequency of 928.4MHz is 2.469dB, which fulfilled the requirement that the insertion loss should be smaller than 3dB.
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