高导热AlN-TiB_2微波衰减陶瓷制备与性能研究  

Preparation and Properties of High Thermal Conductivity AlN-TiB_2 Microwave Attenuation Ceramic

作　　者：刘文彬[1] 熊宁[1] 王铁军[1] 李永卿[2] 

机构地区：[1]中国钢研科技集团有限公司安泰科技股份有限公司,北京市难熔金属材料工程技术研究中心,北京100081 [2]北京工业大学材料学院,北京100124

出　　处：《硅酸盐通报》2013年第10期2008-2011,2015,共5页Bulletin of the Chinese Ceramic Society

摘　　要：以TiB2为微波衰减剂,通过高温热压烧结工艺制备出AlN基微波衰减陶瓷材料。研究了微波衰减剂含量对陶瓷材料的显微结构与热导率、介电性能的影响。结果表明:随着TiB2含量的增加,材料的热导率从110 W/m·K降低到72 W/m·K,微波频率10 GHz下介电常数逐渐增加,介电损耗从0增加到0.17,具备了较好的衰减性能和导热性能。In this paper, AIN-based microwave attenuation materials by high temperature hot-press sintering were prepared, where TiB2 was attenuation agent. The effect of TiB2 contents on microstructure, thermal conductivity, and dialectical properties was investigated. The results show that with the content of attenuation agent increasing, the thermal conductivity decreases from 110 to 72 W/m. K, the dielectric constant at 10 GHz increases and the dielectric loss rises to 0.16 from zero. The attenuation ceramic has achieved good comprehensive property.

关 键 词：氮化铝 热导率 微波衰减 介电性能 

分 类 号：TQ174[化学工程—陶瓷工业]