核壳结构Fe-Fe3C@C微波吸收材料的制备及性能研究Preparation and Microwave Absorption of Core-shell Fe-Fe3C@C Microwave Absorbing Material
朱保顺,力国民,田玉明,王凯悦
摘要(Abstract):
采用水热法原位聚合Fe~(3+)/C_6H_(12)O_6结合高温碳化制备了Fe-Fe_3C@C复合微波吸收材料;通过X射线衍射、透射电子显微镜、矢量网络分析仪对样品的物相、微观形貌及吸波性能进行测试分析。结果表明,磁性颗粒Fe-Fe_3C被厚约10 nm的石墨碳包覆形成核壳结构,材料具有高的比表面积205.5m~2·g~(-1)与低的表观密度2.97 g·cm~(-3).其吸波性能优异,当涂层厚度为2.5 mm时,其最小反射损耗(RL)达到最低值-14.2 dB,主要归因于复合物有效的阻抗匹配特性及多重界面极化效应。Fe-Fe_3C@C复合材料优异的性能使其有望作为一种潜在的轻质微波吸收材料。
关键词(KeyWords): Fe-Fe3C@C;核壳结构;微波吸收
基金项目(Foundation): 太原科技大学博士启动基金(20152030)
作者(Author): 朱保顺,力国民,田玉明,王凯悦
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