| Preparation and Characterization of M-Type Barium Ferrite Fibers via Aqueous Sol-Gel Process |
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| 作者姓名： | 龚彩荣 范国樑 宋崇林 吕刚 |
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| 作者单位： | School of Material Science and Engineering Tianjin University，School of Material Science and Engineering，Tianjin University，State Key Laboratory of Engines，Tianjin University，State Key Laboratory of Engines，Tianjin University，Tianjin 300072 China，Tianjin 300072 China，Tianjin 300072 China，Tianjin 300072 China |
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| 基金项目： | 国家自然科学基金;天津市自然科学基金;天津大学校科研和教改项目 |
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| 摘 要： | BaFe12O19 fibers was prepared via an aqueous sol-gel process using Fe(OH)(HCOO)2 synthesized in laboratory and Ba(CH3COO)2 as the original materials and citrate as the chelate. The rheological behaviour of spinnable sol was characterized on rheometer, and the development of gel fibers to barium ferrite fibers was studied by IR, TG and XRD. Morphology observation of the fibers was given on SEM, and the diameter of the obtained fibers was between 5 and 10 μm corresponding to different additives. The additives affected the surface tension of the precursor sol which had close relation to the microstructure of fibers. Sucrose and hydroxyethylic cellulose could improve the surface tension while diethanolamine and hexadecylamine reduce that of the precursor sol. And using diethanolamine or hexadecylamine as an additive, well-structured BaFe12O19 fibers could be obtained.
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| 关 键 词： | M型钡铁氧体纤维 水分散体系 溶胶-凝胶法 合成 特性 |
| 收稿时间： | 2006-12-09 |
Preparation and Characterization of M-Type Barium Ferrite Fibers via Aqueous Sol-Gel Process |
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| GONG Cairong,FAN Guoliang,SONG Chonglin,L Gang.Preparation and Characterization of M-Type Barium Ferrite Fibers via Aqueous Sol-Gel Process[J].Transactions of Tianjin University,2007,13(2):117-120. |
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| Authors: | GONG Cairong FAN Guoliang SONG Chonglin L Gang |
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| Institution: | 1. School of Material Science and Engineering, Tianjin University, Tianjin 300072, China
2. State Key Laboratory of Engines, Tianjin University, Tianjin 300072, China |
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| Abstract: | BaFe12O19 fibers was prepared via an aqueous sol-gel process using Fe(OH)( HCOO)2 synthesized in laboratory and Ba(CH3COO)2 as the original materials and citrate as the chelate. The rheological behaviour of spinnable sol was characterized on rheometer, and the development of gel fibers to barium ferrite fibers was studied by IR, TG and XRD. Morphology observation of the fibers was given on SEM, and the diameter of the obtained fibers was between 5 and 10 μm corresponding to different additives. The additives affected the surface tension of the precursor sol which had close relation to the microstructure of fibers. Sucrose and hydroxyethylic cellulose could improve the surface tension while diethanolamine and hexadecylamine reduce that of the precursor sol. And using diethanolamine or hexadecylamine as an additive, well-structured BaFe12O19 fibers could be obtained. |
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| Keywords: | barium ferrite fiber additive microstructure sol-gel synthesis |
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