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钡铁氧体纳米复合材料的制备及其微波吸收性能
Synthesis and Microwave Absorbing Properties of Nanocrystalline Barium Ferrite Composite Material
【摘要】 采用聚乙二醇(PEG)凝胶法制备了Ba(Zn1-xCox)2Fe16O27复合氧化物纳米材料,用X射线衍射分析对产物进行了表征.将制得的材料与传统的微波吸收剂铁粉结合起来,制成双层复合的吸波涂层,进行测试.实验结果表明,所制材料对微波具有良好的吸收性能.并进一步对纳米复合材料的吸波机理进行了探讨.
【Abstract】 Nanocrystalline oxide compound Ba(Zn1- xCox)2Fe16O27 has been synt hesized using PEG gel method. The products are characterized by means of X- ray powder diffraction analysis. Based on a two- layer structure, the Ba(Zn1- xCo x)2Fe16O27 powder is integrated with the traditional microwave absorbing materia l, iron particle, to form the absorbing coatings. The experimental result in dicates that the composite materials have a good absorbing property. The absorpt ive mechanism of nanocrystalline material has also been discussed.
【关键词】 微波吸收;
复合材料;
钡铁氧体;
纳米晶;
【Key words】 Microwave absorption; Composite material; Barium ferrite; Nanocryst al;
【Key words】 Microwave absorption; Composite material; Barium ferrite; Nanocryst al;
【基金】 国家自然科学基金(69974020,60074031,60277033)
- 【文献出处】 物理化学学报 ,Acta Physico-chimica Sinica , 编辑部邮箱 ,2003年03期
- 【分类号】TB383
- 【被引频次】88
- 【下载频次】635