东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (9): 1291-1294.DOI: -

• 论著 • 上一篇    下一篇

Ld_2O_3掺杂对Ni-Zn铁氧体/泡沫铝复合材料吸波性能的影响

薛向欣;张瑜;   

  1. 东北大学材料与冶金学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-09-15 发布日期:2013-06-22
  • 通讯作者: Zhang, Y.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(75102192)

Effect of Ld2O3 doping on wave absorbability of Ni-Zn ferrite/Al-alloy foams composite

Xue, Xiang-Xin (1); Zhang, Yu (1)   

  1. (1) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-09-15 Published:2013-06-22
  • Contact: Zhang, Y.
  • About author:-
  • Supported by:
    -

RichHTML

0

PDF (PC)

588

摘要： 为了研究掺杂Ld2O3对Ni-Zn铁氧体/泡沫铝材料吸波性能的影响,在泡沫铝表面涂覆了单一Ni-Zn铁氧体和掺杂不同质量分数的Ld2O3的Ni-Zn铁氧体复合粉,利用GJB2038—94"雷达吸波材料反射率测试方法"中的雷达截面(RCS)法对材料微波反射率进行了测量,扫描电镜(SEM)对吸波剂的形貌进行了分析.结果表明,在12~18 GHz频段内,涂覆添加Ld2O3后泡沫铝复合材料的吸波性能优于涂覆单一的Ni-Zn铁氧体.在26.5~40.0 GHz频段内,Ld2O3质量分数为1%的泡沫铝复合材料吸波性能最好,当其质量分数大于1%时,材料吸波性能降低.因此,在泡沫铝合金表面涂覆适当比例的Ni-...

关键词: 泡沫铝合金, Ld2O3, 吸波性能, Ni-Zn铁氧体

Abstract: To investigate the effect of Ld2O3 doping on the microwave absorbability of Ni-Zn ferrite/Al-alloy foam composite, the surface of Al-alloy foam was separately coated with Ni-Zn ferrite and Ld2O3-doped Ni-Zn ferrite powdered composite (with different contents of doping). The coated Al-alloy foams were tested according to the Standard GJB2038-94 "method to test the reflectivity of radar absorbing materials", i.e., the RCS (radar cross-section) method. The topography of wave absorbent was analyzed through scanning electron microscopy (SEM). The results indicated that in the 12~18 GHz band the wave absorbability of the Al-alloy foam sample coated with Ld2O3-doped Ni-Zn ferrite is better than the sample coated with simple Ni-Zn ferrite. However, in the 26.5~40 GHz band, the best wave absorbability belongs to the Al-alloy foam coated with the powdered composite absorbent in which the Ld2O3 content is 1wt%, and the absorbability goes down if the content is higher than 1wt%. So, the absorbability of the Al-alloy foam coated with the powdered composite of Ni-Zn ferrite to which the content of Ld2O3 doping is appropriate can be improved further.

中图分类号: