溶胶-凝胶法制备锂锌铁氧体及其吸波性能  

Preparation of Lithium Zinc Ferrite by Sol - Gel Method and Microwave Absorbing Property

作　　者：赵维富[1] 张存瑞[1] 常志敏[1] 王喆[1] ZHAO Wei - fu;ZHANG Cun- rui;CHANG Zhi - min;WANG Zhe(Department of Electronmagnetic Protection Material ＆ Pevice,No.33 Institute of CETC,030032,Shanxi,Chin)

机构地区：[1]中国电子科技集团公司第33研究所电磁防护材料与器件事业部,山西·太原030032

出　　处：《电子材料与电子技术》2018年第2期25-28,共4页Electronic Material & Electronic Technology

摘　　要：采用溶胶-凝胶法制备了锂锌铁氧体干凝胶，干凝胶通过自蔓延燃烧得到纳米铁氧体粉末，并对粉末在1300℃的条件下进行高温烧结，获得了Li0.35Zn0.3Fe2.35O4铁氧体粉末。将锂锌铁氧体粉末与硅橡胶进行复合，并测试其吸波性能。结果显示在1．6-12GHz的频段范围，该复合材料吸波性能良好，不但具有两个吸收峰，且其吸收性能均大于8dB，最大吸收性能达到了47dB。The lithium zinc ferrite dry gel was prepared by the sol - gel method. The nano ferrite powder was obtained by self propagating combustion, and the Li0. 35Zn0. 3Fe2. 35O4 ferrite powder was obtained at high tem- perature under the condition of 1300 ℃. The lithium zinc ferrite powder was compounded with silicone rubber and its microwave absorbing property was tested. The results show that in the range of 1.6 - 12GHz, the composites have good wave absorption properties, not only have two absorption peaks, but also their reflectivity is more than 8dB, and the maximum retlectivity reaches 47dB.

关 键 词：溶胶-凝胶法 锂锌铁氧体 吸波性能 

分 类 号：TQ174.758.2[化学工程—陶瓷工业]