采用熔体快淬制备NdFe二元合金甩带,获得较细的纳米晶,经粉碎及处理后,采用体积比为50%的含量与石蜡混合,进行2 GHz～12 GHz频段的电磁性能测试,获得了较好的微波电磁性能,其中Nd8Fe92在2 GHz处μr=4.5-j2.2,εr=128-j45,当厚度为1.2 mm,分别模拟得到微波频率在4 GHz附近反射率衰减为-8.5 dB(86%的能量损耗),在2 GHz附近衰减为-5.8 dB(75%的能量损耗)的性能.模拟后可根据不同频率需要设计成在一定厚度和Nd元素含量比的微波吸收材料.
参考文献
| [1] | Meshram M R;Nawal K Agrawal et al.[J].Journal of Magnetism and Magnetic Materials,2004,271:207. |
| [2] | Jiu Rong Liu;Masahiro Itoh;Takashi Horikawa;Ken-Ichi Maehida .[J].Journal of Applied Physics,2005,98:543 04. |
| [3] | Musal H M et al.[J].IEEE Transactions on Magnetics,1989,25:3851. |
| [4] | Kim S.S.;Jo S.B. .Complex permeability and permittivity and microwave absorption of ferrite-rubber composite at X-band frequencies[J].IEEE Transactions on Magnetics,1991(6):5462-5464. |
| [5] | Michielssen E.;Sajer J.-M. .Design of lightweight, broad-band microwave absorbers using genetic algorithms[J].IEEE Transactions on Microwave Theory and Techniques,1993(6):1024-1031. |
| [6] | Sung-Soo Kim;Sun-Tae Kim;Yeo-Choon Yoon;Kyung-Sub Lee .[J].Journal of Applied Physics,2005,97:10F905. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%