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首页> 外文会议>The 10th International Conference on Ferrites（2008中国国际铁氧体研讨会）论文集 >Recent Development of the Ferrite Powders for Radio Wave Absorber and Electromagnetic Shield Applications
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Recent Development of the Ferrite Powders for Radio Wave Absorber and Electromagnetic Shield Applications

机译：用于无线电波吸收器和电磁屏蔽应用的铁氧体粉末的最新进展

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The ferrite powders, which have variable kinds of compositions and particle sizes, are developed for the electromagnetic wave absorber material. These powders compose the compounds with resin or rubber,which are manufactured to the films and sheets for radio wave absorber, especially for the frequency from 10MHz to 2 GHz. The high frequency characteristics are investigated by the complex permeability from 1 MHZ to 18GHz. The peak of loss factor (imaginary partμ" ) depends on the composition of Mn-Zn ferrite and Ni-Zn ferrite. The frequency dependence of two types of the ferrite composition, the high and low μi or low-loss, are compared. The effect of the particle size of ferrite powder is also significant. The authors prepare the Ni-Zn-Ferrite powders, which have the wide range particle size from submicron to 100 μm by the special materials processing. The frequency characteristics of the electromagnetic absorption can be controlled by the composition and the particle size of Mn-Zn and Ni-Zn ferrite powder.
机译：具有可变种类的组成和粒径的铁氧体粉末被开发用于电磁波吸收体材料。这些粉末由树脂或橡胶组成的化合物，可制成用于无线电波吸收器的薄膜和片材，特别是在10MHz至2 GHz的频率下。通过从1 MHZ到18GHz的复磁导率研究了高频特性。损耗因子的峰值（虚部μ”）取决于Mn-Zn铁氧体和Ni-Zn铁氧体的成分。比较了两种类型的铁氧体成分的频率依赖性，即高和低μi或低损耗。铁氧体粉末的粒径效应也很显着，作者通过特殊的材料制备方法制备了亚微米至100μm粒径范围的镍锌铁氧体粉末。由Mn-Zn和Ni-Zn铁氧体粉末的组成和粒径控制。

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