| NiFe2O4/T-ZnOw复合材料的制备及电磁波吸收性能 |
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| 引用本文： | 于 美,刘鹏瑞,刘建华,李松梅,王 承,孙玉静.NiFe2O4/T-ZnOw复合材料的制备及电磁波吸收性能[J].无机化学学报,2011,27(9):1743-1747. |
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| 作者姓名： | 于 美 刘鹏瑞 刘建华 李松梅 王 承 孙玉静 |
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| 作者单位： | 1. 北京航空航天大学,材料科学与工程学院,空天先进材料与服役教育部重点实验室,北京100191
2. 六国家知识产权局专利审查协作中心,北京,100088 |
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| 基金项目： | 国家自然科学基金(No.51001007); 中央高校基本科研业务费专项资金资助项目 |
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| 摘 要： | 采用铁氧体化学镀在四角氧化锌晶须(T-ZnOw)表面包覆NiFe2O4镀层,制备了NiFe2O4/T-ZnOw复合材料。利用X射线衍射仪、扫描电镜、能谱分析仪对镀覆前后T-ZnOw的结构、形貌等进行了表征。利用矢量网络分析仪研究了NiFe2O4/T-ZnOw复合材料的电磁波吸收性能。结果表明,化学镀覆后,在T-ZnOw表面包覆了尖晶石型NiFe2O4镀层,生成了NiFe2O4/T-ZnOw复合材料,该材料为磁损耗型材料。化学镀覆过程中T-ZnOw的装载量会影响复合材料的介电常数和磁导率,当T-ZnOw装载量为0.2g时,所制备的复合材料具有最大的介电常数、磁导率、介电损耗和磁损耗,当吸收层厚度达到3 mm时,反射率在14 GHz处达到-11 dB。
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| 关 键 词： | 四角氧化锌晶须 镍铁氧体 铁氧体化学镀 电磁波吸收性能 |
Fabrication and Electromagnetic Microwave Absorbing Properties of NiFe2O4/T-ZnOw Composites |
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| YU Mei,LIU Peng-Rui,LIU Jian-Hu,LI Song-Mei,WANG Cheng and SUN Yu-Jing.Fabrication and Electromagnetic Microwave Absorbing Properties of NiFe2O4/T-ZnOw Composites[J].Chinese Journal of Inorganic Chemistry,2011,27(9):1743-1747. |
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| Authors: | YU Mei LIU Peng-Rui LIU Jian-Hu LI Song-Mei WANG Cheng and SUN Yu-Jing |
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| Institution: | Key Laboratory of Aerospace Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Key Laboratory of Aerospace Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Key Laboratory of Aerospace Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Key Laboratory of Aerospace Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100191, China,Key Laboratory of Aerospace Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing 100191, China and State Intellectual Property Office of the Peoples Republic of China, Beijing 100088, China |
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| Abstract: | T-ZnOw/NiFe2O4 composites were prepared by encapsulating T-ZnOw with a NiFe2O4 film through ferrite plating. XRD, SEM and energy dispersion spectroscopy (EDS) were used to characterize the structure, morphology of T-ZnOw before and after plating. Vector network analyzer was used to measure the microwave absorbing properties of NiFe2O4/T-ZnOw composites. The results indicate that NiFe2O4/T-ZnOw composites are fabricated after plating by covering a layer of NiFe2O4 on the surface of T-ZnOw. The composites are magnetic loss materials. T-ZnOw loadings affect the permittivity and permeability of composites. The composites show maximum permittivity, permeability, dielectrical loss and magnetic loss when T-ZnOw loading is 0.2 g during plating. The reflection loss (R.L.) reaches -11 dB at 14 GHz when the thickness of absorbing materials is 3 mm. |
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| Keywords: | T-ZnOw NiFe2O4 ferrite plating microwaving absorbing properties |
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