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空心球表面原位生长羰基铁的新方法及其微波吸收性能
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Novel method for insitu growth of carbonyl iron on the surface of hollow cenospheres and determination of itsmicrowave absorption properties
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    摘要:

    本研究开发了一种有效、简单、低成本的金属有机化学气相沉积法制备碳基铁(CI)包覆中空微球(Ce)作为新型微波吸收复合材料的方法。结构和形貌分析表明,复合材料具有完整的芯/壳结构,其中Ce为芯层,CI为壳层。与Ce相比,复合材料具有更高的复合导磁率和介电常数,说明复合材料的吸收能力有所提高。利用实测电磁参数模拟计算了厚度d=2mm条件下Ce和Ce@CI涂层的反射率曲线。Ce@CI样品的吸收峰移至高频,最小反射峰减小至?26.2 db。小于- 10dB带宽的频率增加到6ghz,覆盖了整个Ku频段。

    Abstract:

    This study develops an effective, simple, and low-cost method through metal–organic chemical vapor deposition for manufacturing carbonyl iron (CI)-coated hollow cenospheres(Ce) as new composites for microwave absorption. Structure and morphology analyses demonstrate that the composites have a complete core/shell structure with Ce as the core and CI layers as the shell. Compared with Ce, the composites have higher complex permeability and permittivity, indicating their improved absorption capacity. The measured electromagnetic parameters are used to analog and calculate the reflectance curves of Ce and Ce@CI coating under the condition of thickness d=2mm. The absorption peak of the Ce@CI sample shifts to the high frequency, and the minimum reflection peak decreases to ? 26.2dB. The frequencyat less than – 10dB bandwidth increases to 6 GHz, which covered the entire Ku band.

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刘渊,李茸,师金锋,张毅.空心球表面原位生长羰基铁的新方法及其微波吸收性能[J].稀有金属材料与工程,2020,49(9):3030~3034.[LIU Yuan, LI Rong, SHI Jinfeng, ZHANG Yi. Novel method for insitu growth of carbonyl iron on the surface of hollow cenospheres and determination of itsmicrowave absorption properties[J]. Rare Metal Materials and Engineering,2020,49(9):3030~3034.]
DOI:10.12442/j. issn.1002-185X.20200082

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  • 收稿日期:2020-02-13
  • 最后修改日期:2020-03-03
  • 录用日期:2020-03-05
  • 在线发布日期: 2020-10-15
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