【摘 要】
：
Thin films of barium hexaferrite were prepared on fly ash cenosphere particles by the sol-gel method using Fe(NO3)3·9H2O,Ba(NO3)2 and citric acid as raw materi
【机 构】
：
Department of Materials Science and Technology,State Kay Laboratry of Die and Mould Technology
【基金项目】
：
湖南省自然科学基金;湖南省教育厅资助项目
论文部分内容阅读
Thin films of barium hexaferrite were prepared on fly ash cenosphere particles by the sol-gel method using Fe(NO3)3·9H2O,Ba(NO3)2 and citric acid as raw materials. The prepared films were characterized by differential thermal and thermogravimetric analysis (DTA-TG), X-ray diffraction analysis (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDX), X-ray photoelectron spectroscopy (XPS), and vibrating sample magnetometry. The magnetic and structural properties of barium hexaferrite coated cenosphere particles were also studied. The experimental results show that even and continual barium hexaferrite coatings were prepared on fly ash cenospheres, and the magnetic conductivity was imparted to these non-conducting oxide ceramic particles. The low density barium hexaferrite coated cenosphere particles may be utilized for manufacturing microwave absorbing materials.
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