无机材料学报

• 研究论文 • 上一篇    下一篇

铁氧体-微晶玻璃纳米复合材料的结构与性能

岳振星; 周济; 张洪国; 李龙土; 桂治轮   

  1. 清华大学材料系新型陶瓷与精细工艺国家重点实验室; 北京 100084
  • 收稿日期:1998-07-13 修回日期:1998-08-17 出版日期:1999-06-20 网络出版日期:1999-06-20

Structure and Properties of Ferrite/Glass-ceramic Nanocomposites

YUE Zhen-Xing; ZHOU Ji; ZHANG Hong-Guo; LI Long-TU; GUI Zhi-Lun   

  1. Department of Materials Science and Engineering; Tsinghua University Beijing 100084 China
  • Received:1998-07-13 Revised:1998-08-17 Published:1999-06-20 Online:1999-06-20

摘要: 采用溶胶-凝胶工艺首先合成了NICuZn铁氧体纳米粉末和MgO-Al2O3-SiO2(MAS)凝胶玻璃粉末,将两种粉末按一定比例均匀混合,烧结后得到了由NiCuZn铁氧体和堇青石微晶体两相共存的铁氧体一微晶玻璃纳米复合材料。该材料具有可调控的电磁性能,其起始磁导率高于3、介电常数低于6、截止频率高于2GHz,可望用作持高频多层片式电感介质材料.

关键词: NiCuZn铁氧体, 微晶玻璃, 复合材料, 电磁性能

Abstract: NiCuZn ferrite nanometre powder and MgO-Al2O3-SiO2 (MAS) gel powder were first synthesized by sol-gel process. Being mixed and sintered, a series
of novel composites with ferrite and MAS glass-ceramic were obtained. XRD resultsrevealed that the composites have diphasic structures of NiCuZn ferrite and
cordierite crystallites. No chemical reaction between two constituents during sintering was detected. The composites have tunable electric and magnetic properties
with the resonant frequencies higher than 2GHz.

Key words: NiCuZn ferrite, glass-ceramic, nanocomposite, electro-magnetic properties

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