| 磁场诱导自蔓延高温合成钡铁氧体 |
| |
| 引用本文： | 刘玉存,王建华,刘登程,郭豪.磁场诱导自蔓延高温合成钡铁氧体[J].功能材料与器件学报,2009,15(3). |
| |
| 作者姓名： | 刘玉存 王建华 刘登程 郭豪 |
| |
| 作者单位： | 中北大学,化工与环境学院,太原,030051 |
| |
| 基金项目： | 山西省自然科学基金(No.20051055)山西省工业攻关项目 |
| |
| 摘 要： | 本文采用外加磁场诱导自蔓延高温合成钡铁氧体,试验用的电磁场强度最高可达1.3T,对无磁场和不同磁场强度下合成的铁氧体的形貌、相组成和磁性能分别进行了表征.研究结果表明:外加磁场对燃烧温度有影响,燃烧温度影响产物转换,燃烧温度较低时,产物为BaFe2O4与BaFe12O19相共存;本试验条件下,磁场强度为0.86T时,合成为M型的钡铁氧体(BaFe12O19),产物结晶完整,有六角片状的钡铁氧体,且性能达到了最佳,矫顽力达到1083(4π)-1·kA·m-1,比剩余磁化强度为16.16 A·m2/kg,比不加磁场条件下分别提高50%和提高32%,说明适当的磁场强度诱导自蔓延高温合成可以改善BaFe12O19的磁性能.
|
| 关 键 词： | 钡铁氧体 自蔓延高温合成 磁场 磁性能 |
Effect of a magnetic field on self-propagating high-temperature synthesis of barium ferrite |
| |
| LIU Yu-cun,WANG Jian-hua,LIU Deng-cheng,GUO Hao.Effect of a magnetic field on self-propagating high-temperature synthesis of barium ferrite[J].Journal of Functional Materials and Devices,2009,15(3). |
| |
| Authors: | LIU Yu-cun WANG Jian-hua LIU Deng-cheng GUO Hao |
| |
| Affiliation: | College of chemical Engineering and Environment;North university of China;Taiyuan 030051;China |
| |
| Abstract: | Barium ferrite have been made in air by Magnetic field induced self-propagating high-temperature synthesis(SHS),the magnetic field strength individual is o.63T,0.86T and 1.3T.The microstructure,phase composition and magnetic performance of the combustion products were characterized by SEM,XRD and VSM.The results show that a magnetic field causes a significant change in combustion temperature,the products are compound of BaFe2O4 and BaFe12O19 when the combustion temperature are lower.The product is pure BaFe... |
| |
| Keywords: | Barium ferrite self-propagating high-temperature synthesis magnetic field Magnetic performance |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
