Structure and microwave absorption properties of Nd–Co–Ni alloys

  • Ziqiang Qiao
  • Shunkang Pan
  • Jilei Xiong
  • Lichun Cheng
  • Qingrong Yao


To study the effect of Ni content on microwave absorption of Nd2Co17 alloy. The Nd2Co17−x Ni x (X = 0.0, 0.2, 0.6, 1.0, 1.4) powders were prepared by arc smelting and high energy ball milling method. The structure and morphology of the powder were investigated by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electromagnetic parameters of the powder were measured by vector network analyzer (VNA) at room temperature. The XRD results indicate that the prepared powder maintain the Nd2Co17 phase. The minimum reflectivity value frequency shifts towards the lower frequency with the increase of Ni content. The minimum reflectivity value of Nd2Co15.6Ni1.4 alloy reaches about −26.6 dB at 2.9 GHz with the matching thickness of 2.2 mm. And the milled powder was tempered ranging of 50–200 °C for 1 h. The minimum reflectivity frequency shifts to higher frequency region compared to the powder without heat treatment. The absorbing frequency bandwidth increases with the tempering treatment increase.


Lower Frequency Region Minimum Reflectivity Microwave Absorption Property Electromagnetic Parameter Relative Complex Permittivity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.



This work was supported by the National Natural Science Foundation of China (51361007), Guangxi Natural Science Foundation (2014 GXNSFAA118317, 2013 GXNSFAA019295), Scientific Research Project of Guangxi Education Department (YB 2014139), Innovation project of GUET Graduate Education (YJCXS 201566) and Guangxi Key Laboratory of Information Materials (131010-Z).


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Copyright information

© Springer Science+Business Media New York 2016

Authors and Affiliations

  • Ziqiang Qiao
    • 1
  • Shunkang Pan
    • 1
  • Jilei Xiong
    • 3
  • Lichun Cheng
    • 1
    • 2
  • Qingrong Yao
    • 1
    • 2
  1. 1.School of Material Science and EngineeringGuilin University of Electronic TechnologyGuilinPeople’s Republic of China
  2. 2.School of Materials and EngineeringCentral South UniversityChangshaPeople’s Republic of China
  3. 3.Chinalco Guangxi Non Ferrous Jinyuan Rare Earth CO., LTDHezhouPeople’s Republic of China

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