面向SIP的多K值Li2O-Nb2O5-TiO2系LTCC微波介质陶瓷材料应用基础研究

项目名称： 面向SIP的多K值Li2O-Nb2O5-TiO2系LTCC微波介质陶瓷材料应用基础研究

项目编号： No.51202021

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 无机非金属材料学科

项目作者： 李恩竹

作者单位： 电子科技大学

项目金额： 25万元

中文摘要： 基于LTCC的SIP是实现功能集成模块最有效技术途径。用于SIP的LTCC材料除了系列化的介电常数、高Qf值、及近零谐振频率温度系数外，材料间共烧匹配性也是研究的热点。本项目拟以Li2O-Nb2O5-TiO2（LNT）材料为研究对象，通过M-Phase和Li2TiO3ss两相复合，制备多K值（K =15～70）LNT系微波介质陶瓷，探索解决材料共烧匹配性问题的可能性；引入与流延工艺匹配的烧结助剂进行降烧实验，阐明烧结助剂对LNT陶瓷烧结性能与介电性能的影响及低温烧结机理；再通过离子置换改善LNT陶瓷性能，揭示代位离子对LNT陶瓷的烧结特性、相组成、微观结构和介电性能的影响规律。为用于SIP的LTCC材料的制备及性能改善提供新的思路，为多K值LNT系LTCC微波介质陶瓷材料的低温烧结及离子改性研究提供实验基础，对研究LNT系LTCC微波介质陶瓷材料的物理机制、发展及应用都具有重要意义。

中文关键词： LNT；低温共烧陶瓷；微波；介电性能；烧结性能

英文摘要： SIP（System in package）based on LTCC(Low Temperature Co-fired Ceramic) is the most effective method for making the functional intergration module. In addition to the series of permittivities, high Qf value and near-zero resonant frequency temperature coeeficient, the matching between the co-fired materials is also be paid attention to. This project focus on the Li2O-Nb2O5-TiO2 (LNT) system. Based on which, new dielectric ceramic composites with series of permittivities(15～70) are composed of M-phase and Li2TiO3ss phases, to explore the possibility of solving the matching problem radically. By adding the sintering additives matching with the casting process, the LNT-based LTCC microwave dielectric ceramics are supposed to be prepared using the solid-state process. And the effect of the sintering additives on the sintering and dielectric properties, and the low temperature sintering mechanism are going to be clarified. The LNT ceramic performance is supposed to be improved with ionic modification.The relationships bewteen the substitutional ions with the sintering character, phase composition, microstructure and dielectric properties of LNT ceramic are going to be studied. This project provides new ideas for the preparation and performance improvement of the LTCC materials appling for the SIP application, and the e

英文关键词： LNT；LTCC；microwave；dielectric property；sintering properties