Α-Fe /Nd2Fe14B Nanocomposites for Electromagnetic-Wave-Absorber in GHz Microwave Frequencies
Α-Fe /Nd2Fe14B Nanocomposites for Electromagnetic-Wave-Absorber in GHz Microwave Frequencies
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用于 GHz 微波频率电磁波吸收器的 α-Fe /Nd2Fe14B 纳米复合材料
DOI：
10.4028/www.scientific.net/amr.399-401.1102
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
L. Deng
中科院分区：
文献类型：
--
作者：
L. Lian;Y. Liu;L. Deng
Nd5Fe92B3合金采用感应熔炼。采用熔融纺丝法、后续退火处理和球磨制备了α-Fe复合低含量Nd2Fe14B纳米复合材料。在0.5-18 GHz频率范围内测量复合材料的复介电常数、磁导率。渗透率谱表现出弛豫型特征。由于磁损耗和介电损耗的共同作用，α-Fe/Nd2Fe14B复合材料在9-17GHz频段表现出优异的微波吸收性能（反射损耗：RL<-20dB），匹配厚度较薄，为1.6-2.5 mm。 α-Fe/Nd2Fe14B纳米复合材料被认为是GHz微波范围内良好的微波吸收体。
Nd5Fe92B3 alloy was induction-melted. The α-Fe compounded low content of Nd2Fe14B nanocomposites were prepared using a melt-spinning method, subsequent annealing treatment, and ball milling. The complex permittivity, permeability of composites was measured in the 0.5-18 GHz frequency range. The permeability spectra exhibits relaxation type characteristic. The α-Fe/Nd2Fe14B composites shows an excellent microwave absorption property (reflection loss: RL<-20dB) in 9-17GHz with thin matching thickness 1.6-2.5 mm, due to the cooperate effect of magnetic loss and dielectric loss. α-Fe/Nd2Fe14B nanocomposites are thought to be a good microwave absorbers in GHz microwave range.