CAJ | 학술논문

制备以石蜡为基体并具有玻璃包覆 Fe73.5Si13.5B9Nb3Cu1非晶丝不同填充比的同轴介电样品，在相对较高的微波吸收频段(2~18 GHz)下研究短丝填充比(质量分数3%~9%)和样品厚度(1~7 mm)对同轴介电样品的微波吸收性能的影响规律。采用X射线衍射谱(XRD)、差示扫描量热分析(DSC)、扫描电子显微分析(SEM)和矢量网格分析仪(SNA)表征材料的微结构并评价其吸波性能。结果表明，不同填充比的同轴介电样品的复磁导率和复介电常数存在重要的频率范围(6~18 GHz)。模拟结果显示，具有3 mm厚度和7%填充比的样品具有较好的微波吸收性能，其反射率在14 GHz时达到峰值-34 dB。这对于开发具有更宽微波吸收范围应用的微丝介电材料是十分有益的。
제비이석사위기체병구유파리포복 Fe73.5Si13.5B9Nb3Cu1비정사불동전충비적동축개전양품，재상대교고적미파흡수빈단(2~18 GHz)하연구단사전충비(질량분수3%~9%)화양품후도(1~7 mm)대동축개전양품적미파흡수성능적영향규률。채용X사선연사보(XRD)、차시소묘량열분석(DSC)、소묘전자현미분석(SEM)화시량망격분석의(SNA)표정재료적미결구병평개기흡파성능。결과표명，불동전충비적동축개전양품적복자도솔화복개전상수존재중요적빈솔범위(6~18 GHz)。모의결과현시，구유3 mm후도화7%전충비적양품구유교호적미파흡수성능，기반사솔재14 GHz시체도봉치-34 dB。저대우개발구유경관미파흡수범위응용적미사개전재료시십분유익적。
Coaxially dielectric samples consisting of different packing ratios of glass-covered Fe73.5Si13.5B9Nb3Cu1 amorphous wires embedded in a paraffin wax matrix were fabricated, and the influence of short-wire packing ratio (3%-9% in mass fraction) and thickness (1-7 mm) on the microwave absorption properties was systematically investigated in microwave frequency range of 2-18 GHz. X-ray diffraction (XRD), differential scanning calorimetry (DSC), scanning electron microscopy (SEM) and scalar network analyzer (SNA) were used for characterizing microstructure and evaluating microwave absorption properties. Experimental results show the significant frequency (6-18 GHz) dependence of the complex relative permeability and permittivity. The reflection loss (RL) with different thickness and short-wire packing ratio reveals that the composite sample containing 7% exhibits better microwave absorption behavior with its minimum value of RL reaching-34 dB in thickness of 3 mm at 14 GHz. Therefore, it is significantly useful to develop microwire-dielectric materials with much wider absorption band for microwave absorption applications.