Parallel preparation and properties investigation on Li2O-Nb2O5-TiO2 microwave dielectric ceramics
Parallel preparation and properties investigation on Li2O-Nb2O5-TiO2 microwave dielectric ceramics
复制标题
Li2O-Nb2O5-TiO2微波介质陶瓷的并行制备及性能研究
DOI：
10.1016/j.jeurceramsoc.2017.04.022
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发表时间：
2017-10-01
影响因子：
5.7
通讯作者：
Li, Yongxiang
中科院分区：
文献类型：
--
作者：
Chang, Jian;Liu, Zhifu;Li, Yongxiang
以干粉末为原料，发展了一种多组分微波介质陶瓷的平行制备方法。以Li 2 O-Nb 2 O 5-TiO 2三元体系为模型材料进行研究。通过平行合成一组具有相同晶体结构和相近介电性能的LiNb 0. 6 Ti 0. 5 O3陶瓷，证实了平行陶瓷制备工艺的有效性。采用平行工艺制备了富M相和富Li 2 TiO 3相的陶瓷库，系统研究了其微波介电性能和晶相组成。制备出了介电常数为18.4、品质值（Q × f）为79000 GHz的高性能微波陶瓷，其组成为0.55Li（2）O-0.05Nb（2）O（5）-0.40TiO（2）。这种并行过程可以广泛应用于探索各种块体陶瓷库，以发现具有高性能的新功能材料。(C)2017爱思唯尔有限公司版权所有。
A parallel preparation method was developed using dry powders as starting materials to synthesize multi-compositional microwave dielectric ceramics. The Li2O-Nb2O5-TiO2 ternary system was investigated as a model material. The validity of the parallel ceramic preparation process was confirmed by synthesizing a group of LiNb0.6Ti0.5O3 ceramics in parallel, which showed the same crystalline structure and close dielectric properties. The ceramic libraries with M-phase-rich samples and Li2TiO3-rich samples were prepared using the parallel process, and the microwave dielectric properties and crystal phases were investigated systematically. An excellent microwave ceramic with a composition of 0.55Li(2)O-0.05Nb(2)O(5)-0.40TiO(2) was obtained, which has a dielectric constant of 18.4 and a high quality value (Q x f) of 79000 GHz. This parallel process can be applied extensively to explore a variety of bulk ceramic libraries for discovering new functional materials with high performances. (C) 2017 Elsevier Ltd. All rights reserved.