Microwave Dielectric Properties of Low‐Firing Li2MO3 (M=Ti, Zr, Sn) Ceramics with B2O3–CuO Addition
Microwave Dielectric Properties of Low‐Firing Li2MO3 (M=Ti, Zr, Sn) Ceramics with B2O3–CuO Addition
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DOI：
10.1111/j.1551-2916.2010.04152.x
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发表时间：
2010-11
影响因子：
3.9
通讯作者：
L. Pang;Di Zhou
中科院分区：
文献类型：
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作者：
L. Pang;Di Zhou
本文研究了纯Li_2MO_3（M= Ti，Zr，Sn）陶瓷和添加B_2O_3-CuO的Li_2MO_3（M=Ti，Zr，Sn）陶瓷的烧结行为、微波介电性能以及与银的化学相容性。添加1wt%B2O3-CuO不影响Li 2 MO 3（M=Ti、Zr、Sn）的相组成，并且从XRD分析中没有观察到第二相。通过添加1 wt%的B2 O3-CuO，可以将烧结温度从1200°C以上降低到900°C左右。共烧陶瓷的XRD分析表明，Li 2 MO 3（M=Ti，Zr，Sn）陶瓷与银化学相容。当B2 O3-CuO的添加量为1wt%时，Li 2 TiO 3和Li 2SnO 3陶瓷均能良好烧结，并具有良好的微波介电性能，其介电常数为19.67，Q×f值为46.300 GHz，谐振频率温度系数（TCF）为31.3 ppm/°C，介电常数为13.73，Q×f值为36 400 GHz，TCF约为+27.4 ppm/°C。
In this work, the sintering behaviors, microwave dielectric properties, and chemical compatibility with silver of pure and B2O3–CuO addition Li2MO3 (M=Ti, Zr, Sn) ceramics were studied. The 1 wt% B2O3–CuO addition does not affect the phase composition of Li2MO3 (M=Ti, Zr, Sn) and no secondary phase could be observed from XRD analysis. The sintering temperatures can be lowered from above 1200°C to around 900°C by 1 wt% B2O3–CuO addition. XRD analysis of cofired ceramics indicates that the Li2MO3 (M=Ti, Zr, Sn) ceramics are chemically compatible with silver. With 1 wt% B2O3–CuO addition, both Li2TiO3 and Li2SnO3 ceramics can be sintered well and possess good microwave dielectric properties with a permittivity of ∼19.67, a Q×f value of ∼46 300 GHz, a temperature coefficient of resonant frequency (TCF) of ∼+31.3 ppm/°C, and a permittivity of 13.73, a Q×f value of 36 400 GHz and a TCF about +27.4 ppm/°C, respectively.