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潘顺康,乔自强,熊吉磊,林培豪,成丽春,王振中.Nd-Fe-C合金的结构及其微波吸收特性研究[J].稀有金属材料与工程(英文),2018,47(6):1734~1738.[Pan shunkang,Qiao Ziqiang,Xiong Jilei,Lin Peihao,Cheng Lichun and Wang Zhenzhong.Structure and Microwave Absorption Properties of Nd-Fe-C Alloys[J].Rare Metal Materials and Engineering,2018,47(6):1734~1738.]
Structure and Microwave Absorption Properties of Nd-Fe-C Alloys
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Received:April 21, 2016  Revised:October 16, 2016
DOI:
Key words: NdFeC alloys  Ball milling  Electromagnetic parameters  Microwave absorbing properties.
Foundation item:国家自然科学基金项目(51361007)
Author NameAffiliation
Pan shunkang,Qiao Ziqiang,Xiong Jilei,Lin Peihao,Cheng Lichun and Wang Zhenzhong  
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Abstract:
      Nd10.2Fe89.8-xCx (x = 0.0, 2.6, 5.2, 7.8) powder were prepared by arc smelting and ball milling. The structure and morphology of the powder were investigated by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The electromagnetic parameters of the powders were measured by vector network analyzer (VNA) at room temperature. Microwave absorbing properties of Nd10.2Fe89.8-xCx (x = 0.0, 2.6, 5.2, 7.8) depend sensitively on the compositions. The minimum absorption peak frequency shifts to the higher region upon the C content. The minimum reflectivity value of Nd10.2Fe84.6C5.2 can achieve to -13.2 dB at 5.2 GHz and the bandwidth of R < -10 dB achieve 1.2 GHz with the best matching thickness of 1.8 mm. The minimum absorption peak shifts towards lower frequency region with absorbing coating thickness increasing.