多孔Al2O3/SiC、MoSi2/SiC复合材料的制备及吸波性能(1 西安建筑科技大学材料科学与工程学院，陕西 西安 710055;2中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室，河南 洛阳 471039)

Luping ZHANG; Xiaofeng YANG; Haikang ZHENG; Qian WANG; Zhenzhen MENG; Zhihong WU

doi:10.11949/0438-1157.20190444

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多孔Al₂O₃/SiC、MoSi₂/SiC复合材料的制备及吸波性能(¹ 西安建筑科技大学材料科学与工程学院，陕西西安 710055;²中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室，河南洛阳 471039)

材料化学工程与纳米技术 | 更新时间：2020-06-24

- 多孔Al₂O₃/SiC、MoSi₂/SiC复合材料的制备及吸波性能(¹ 西安建筑科技大学材料科学与工程学院，陕西西安 710055;²中钢集团洛阳耐火材料研究院有限公司先进耐火材料国家重点实验室，河南洛阳 471039)
- Preparation and microwave absorbing performance of Al₂O₃/SiC, MoSi₂/SiC porous composites
- 化工学报 2019年70卷第11期页码：4478-4485
- 作者机构：
  
  1.College of Materials Science and Engineering, Xi an University of Architecture and Technology, Xi an 710055, Shaanxi, China
  2.State Key Laboratory of Advance Refractories, Sinosteel Luoyang Institute of Refractories Research Co., Ltd., Luoyang 471039, Henan, China
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(51502236);西安建筑科技大学基础研究基金项目(JC1496);先进耐火材料国家重点实验室开放基金项目(SKLAR201905)
- DOI：10.11949/0438-1157.20190444
  中图分类号： TM 25
- 收稿：2019-04-28，
  
  修回：2019-07-24，
  
  纸质出版：2019-11-05
- 稿件说明：
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张路平, 杨晓凤, 郑海康, 王倩, 蒙真真, 武志红. 多孔Al₂O₃/SiC、MoSi₂/SiC复合材料的制备及吸波性能[J]. 化工学报, 2019, 70(11): 4478-4485 DOI: 10.11949/0438-1157.20190444.

ZHANG Luping, YANG Xiaofeng, ZHENG Haikang, WANG Qian, MENG Zhenzhen, WU Zhihong. Preparation and microwave absorbing performance of Al₂O₃/SiC, MoSi₂/SiC porous composites[J]. CIESC Journal, 2019, 70(11): 4478-4485 DOI: 10.11949/0438-1157.20190444.
张路平, 杨晓凤, 郑海康, 王倩, 蒙真真, 武志红. 多孔Al₂O₃/SiC、MoSi₂/SiC复合材料的制备及吸波性能[J]. 化工学报, 2019, 70(11): 4478-4485 DOI: 10.11949/0438-1157.20190444. DOI：

ZHANG Luping, YANG Xiaofeng, ZHENG Haikang, WANG Qian, MENG Zhenzhen, WU Zhihong. Preparation and microwave absorbing performance of Al₂O₃/SiC, MoSi₂/SiC porous composites[J]. CIESC Journal, 2019, 70(11): 4478-4485 DOI: 10.11949/0438-1157.20190444. DOI：

摘要

以Si、Al

、MoSi

微粉和生物竹材为原料，采用包埋烧结法分别制备出SiC多孔材料、Al

/SiC、MoSi

/SiC复合材料。采用XRD、SEM及波导法测试其物相组成、显微结构及吸波性能。结果表明：MoSi

/SiC复合材料的厚度为2 mm时有明显的吸波特性，有效吸收带宽在X波段的9.65~12.4 GHz频率范围内达2.75 GHz，且最低反射损耗为-38.27 dB。Al

/SiC复合材料孔道内的Al

与SiC晶须交缠，形成大量电偶极矩，产生介电损耗；MoSi

/SiC复合材料除介电损耗外还存在电阻损耗，使得复合材料电磁损耗增加，是较有前途的结构功能吸波材料。

Abstract

MoSi

powder and biological bamboo were used to produce SiC porous ceramic

/SiC and MoSi

/SiC porous composites by embedding and sintering method. The phase composition

microstructure and absorbing performance of the composites were measured by XRD

SEM and waveguide method

respectively. The results show that the MoSi

/SiC composite has obvious absorbing performance when the thickness is 2 mm. The effective absorption bandwidth is 2.75 GHz in the frequency range of 9.65—12.4 GHz in the X-band

and the minimum reflection loss is -38.27 dB. There are many SiC whiskers intermingled with Al

in the pores of Al

/SiC composites

and a large number of electric dipole moments

generated dielectric loss. In addition to dielectric loss

MoSi

/SiC composites also have resistive losses

and the sponge structure of the metal Mo

4.8

0.6

and MoSi

connecting rod formed in the tunnel constitutes a small conductive network to generate leakage loss to consume electromagnetic waves

so that the electromagnetic loss of the composite increases. So it will be more popular structural functional microwave absorbing materials in the future.

关键词

Keywords

references

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