二氧化锆包覆对提高铁钴吸收剂的耐高温性能研究

详细信息

Study on Effect of Zirconium Dioxide Coating on Improving High Temperature Resistance of Iron-cobalt Absorbent

1. Xiamen Advanced Materials Academy of Luoyang Ship Material Research Institute, Xiamen 361101, China;
2. Science and Technology on Marine Corrosion and Protection Laboratory, Luoyang Ship Material Research Institute, Qingdao 266101, China

摘要: 采用溶胶-凝胶法,利用二氧化锆(ZrO₂)与FeCo的结合,制备FeCo@ZrO₂吸收剂,通过矢量网络分析对高温处理前后FeCO@ZrO₂吸收剂的电磁参数和吸波性能进行表征,结果表明:经过包覆改性FeCo@ZrO₂吸收剂的介电常数明显降低,FeCo@ZrO₂吸收剂的阻抗匹配特性和吸波性能得到提高;经过包覆改性,FeCo@ZrO₂吸收剂在高温处理后仍具有较优的吸波性能,其反射率在7～9 GHz波段仍然保持在-10 dB以下。
- FeCo吸收剂 /
- 溶胶-凝胶法 /
- 包覆改性 /
- 耐高温
Abstract: The sol-gel method is used to prepare FeCo@ZrO₂ absorbent by the combination of zirconia and FeCo. Vector network analysis is used to characterize the electromagnetic parameters and absorbing performance of FeCO@ZrO₂ before and after high temperature treatment. The results show that the dielectric constant of FeCo@ZrO₂ absorbent modified by coating is significantly reduced. The impedance matching characteristics and absorbing performance of the FeCo@ZrO₂ absorber are improved. The modified FeCo@ZrO₂absorber still has significant absorbing performance after high temperature treatment, and its reflectivity simulation curve remains below -10 dB at 7-9 GHz.
- FeCo absorbent /
- sol-gel method /
- coating modification /
- high temperature performance

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