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

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Abstract

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.

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Acknowledgments

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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Authors and Affiliations

  1. School of Material Science and Engineering, Guilin University of Electronic Technology, Guilin, 541004, People’s Republic of China

    Ziqiang Qiao, Shunkang Pan, Lichun Cheng & Qingrong Yao

  2. School of Materials and Engineering, Central South University, Changsha, 410083, People’s Republic of China

    Lichun Cheng & Qingrong Yao

  3. Chinalco Guangxi Non Ferrous Jinyuan Rare Earth CO., LTD, Hezhou, 542603, People’s Republic of China

    Jilei Xiong

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  1. Ziqiang Qiao
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Correspondence to Shunkang Pan.

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Qiao, Z., Pan, S., Xiong, J. et al. Structure and microwave absorption properties of Nd–Co–Ni alloys. J Mater Sci: Mater Electron 27, 7487–7493 (2016). https://doi.org/10.1007/s10854-016-4726-8

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  • DOI: https://doi.org/10.1007/s10854-016-4726-8

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