CAJ | 학술논문

FeSiAl 不规则颗粒在酒精溶剂中球磨，制备得到直径为10μm左右厚度为1μm左右的FeSiAl微米片，然后用硅烷偶联剂对微米片表面进行包裹处理。用电子显微镜和 X 射线光谱仪对包裹和未包裹样品做形貌观测和元素分析，并将样品制备成45%(体积分数)的石蜡复合材料，通过矢量网络分析仪测试其在0.1~18 GHz范围内的电磁参数，发现包裹和未包裹样品的复数磁导率曲线基本重合，但包裹后样品的复数介电常数有很明显的下降。微波传输理论计算表明，包裹后样品在L-S波段具有更优越吸波性能。
FeSiAl 불규칙과립재주정용제중구마，제비득도직경위10μm좌우후도위1μm좌우적FeSiAl미미편，연후용규완우련제대미미편표면진행포과처리。용전자현미경화 X 사선광보의대포과화미포과양품주형모관측화원소분석，병장양품제비성45%(체적분수)적석사복합재료，통과시량망락분석의측시기재0.1~18 GHz범위내적전자삼수，발현포과화미포과양품적복수자도솔곡선기본중합，단포과후양품적복수개전상수유흔명현적하강。미파전수이론계산표명，포과후양품재L-S파단구유경우월흡파성능。
The irregular FeSiAl particle was used as a raw material for ball milling with alcohol solvent to pro-duce micron-flakes of the diameter and thickness was about 10 μm and 1 μm,and then used silane coupling agent to package the flakes surface.The morphology and the element content of the packaged sample were in-vestigated with SEM and XPS.The frequency-dependent complex permeability of paraffin composites with 45%volume concentration of flakes was measured using the coaxial line method in 0.1-18 GHz frequency range.Af-ter surface modification the complex permittivity of the packaged composite decreased dramatically in the 0.1-5 GHz frequency range,but the permeability wasn’t found obvious change.The calculated microwave re-flectivities indicated that packaged sample had better absorbing performance than unpackaged sample in L-S fre-quency band.