Microwave dielectric properties of (Mg0.4Zn0.6)2SiO4–CaTiO3 ceramics sintered with Li2CO3–H3BO3 for LTCC technology
Microwave dielectric properties of (Mg0.4Zn0.6)2SiO4–CaTiO3 ceramics sintered with Li2CO3–H3BO3 for LTCC technology
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DOI：
10.1016/j.jallcom.2015.03.059
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发表时间：
2015-08
影响因子：
6.2
通讯作者：
W. Wang;Lingyu Li;Shaomei Xiu;B. Shen;J. Zhai
中科院分区：
文献类型：
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作者：
W. Wang;Lingyu Li;Shaomei Xiu;B. Shen;J. Zhai
研究了Li2CO3、H3BO3、Li2CO3-H3BO3玻璃(B-Li玻璃)和Li2CO3-H3BO3(LB型)添加剂的不同添加方式对0.88(Mg0.4Zn0.6)2SiO4-0.12CaTiO3(MZS-C)陶瓷显微结构和微波介电性能的影响。在所有的添加方法中，LB的添加是降低微波介电性能良好的MZS-C陶瓷烧成温度的最有效的方法。研究了在950℃以下烧结的MZS-C复相陶瓷的物相组成、显微结构、与银的化学相容性以及微波介电性能。介电常数和Q×f值与LB加入量和烧结温度有关。通过调整LB的加入量可以得到接近于零的τf值。在95 0°C/2 h烧结，LB值为4.0wt.%的MZS-C陶瓷具有良好的微波介电性能，εr=7.12，Q×f=28,600 GHz，τf=−6ppm/°C，且材料与银具有良好的配伍性，是一种很有前途的低温共烧陶瓷候选材料。
The effects of different adding methods of Li 2 CO 3, H 3 BO 3, Li 2 CO 3–H 3 BO 3 glass (B-Li glass) and Li 2 CO 3–H 3 BO 3 (LB) additives on the microstructure and microwave dielectric properties of 0.88 (Mg 0.4 Zn 0.6) 2 SiO 4–0.12 CaTiO 3 (MZS-C) ceramics were investigated. Of all the adding methods, the addition of LB is the most effective way to lower the sintering temperature of MZS-C ceramics with good microwave dielectric properties. With LB addition, the MZS-C ceramics can be well sintered below 950° C. The phase formation, microstructure, chemical compatibility with silver and microwave dielectric properties of MZS-C composite ceramics with LB addition were also systematically studied. The dielectric constant and Q× f value were related to the amount of the LB addition and sintering temperature. The near zero τ f value can be obtained by adjusting the amount of LB addition. The MZS-C ceramics with 4.0 wt.% LB sintered at 950° C/2 h exhibited excellent microwave dielectric properties of ε r= 7.12, Q× f= 28, 600 GHz and τ f=− 6 ppm/° C. Meanwhile, the material was compatible with silver, which made it a promising candidate material for LTCC application.