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材料工程  2014, Vol. 0 Issue (8): 21-26    DOI: 10.11868/j.issn.1001-4381.2014.08.004
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
十六烷基三甲基溴化铵对液相还原法制备钴颗粒形貌与磁性能的影响
温术来1, 程荆卫1, 李红1, 刘颖1, 赵修臣1, 王玉锋2
1. 北京理工大学 材料学院, 北京 100081;
2. 西安航空发动机(集团)有限公司, 西安 710021
Effect of CTAB on Morphology and Magnetic Properties of Cobalt Particles Prepared by Liquid Phase Reduction Method
WEN Shu-lai1, CHENG Jing-wei1, LI Hong1, LIU Ying1, ZHAO Xiu-chen1, WANG Yu-feng2
1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China;
2. Xi'an Aero-engine (Group) Ltd., Xi'an 710021, China
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摘要 以十六烷基三甲基溴化铵(CTAB)为表面活性剂,通过液相还原法成功制备磁性穗状钴颗粒。采用电子扫描显微镜(SEM)、能谱仪(EDS)、X射线衍射仪(XRD)与振动样品磁强计(VSM)对制备的钴颗粒进行表征。结果表明:添加CTAB时得到的穗状钴颗粒为片层结构,晶体结构以密排六方为主;而未添加CTAB时得到的是以面心立方为主的菜花状钴颗粒。片层结构穗状钴颗粒的比饱和磁化强度与矫顽力分别为116.17A·m2·kg-1与20.3kA·m-1,而菜花状钴颗粒的比饱和磁化强度及矫顽力分别为158.24A·m2·kg-1与9.174kA·m-1,分析认为这种差异可能是由钴颗粒粒径、磁晶各向异性、形状各向异性以及内部缺陷所导致。
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温术来
程荆卫
李红
刘颖
赵修臣
王玉锋
关键词 钴颗粒十六烷基三甲基溴化铵比饱和磁化强度矫顽力    
Abstract:Using CTAB as surfactant active agent,the spicate cobalt particles were synthesized through liquid phase reduction method. The cobalt particles were characterized by scanning electron microscopy (SEM), energy disperse spectroscopy (EDS), the X-ray diffraction (XRD) and vibrating sample magnetometer (VSM), respectively. The results show that the spicate cobalt particles with CTAB are assembled by nanoplates, mainly composed by HCP structure, while the cobalt particles without CTAB are mainly composed by FCC structure. For the cobalt particles with CTAB, saturation magnetization and coercivity are 116.17A·m2·kg-1 and 20.3kA·m-1, respectively, while for the cobalt particles without CTAB, saturation magnetization and coercivity are 158.24A·m2·kg-1 and 9.174kA·m-1, respectively. The differences in magnetic properties mainly result from grain size, magnetocrystalline anisotropy, shape anisotropy and defect of cobalt particles.
Key wordscobalt particle    cetyl trimethyl ammonium bromide(CTAB)    saturation magnetization    coercivity
收稿日期: 2014-03-10      出版日期: 2014-08-20
中图分类号:  TB34  
通讯作者: 程荆卫(1962-),男,副教授,从事专业:磁性材料制备及性能研究,联系地址:北京市海淀区中关村南大街5号北京理工大学材料学院(100081),E-mail:kingrain_metal@sina.com     E-mail: kingrain_metal@sina.com
引用本文:   
温术来, 程荆卫, 李红, 刘颖, 赵修臣, 王玉锋. 十六烷基三甲基溴化铵对液相还原法制备钴颗粒形貌与磁性能的影响[J]. 材料工程, 2014, 0(8): 21-26.
WEN Shu-lai, CHENG Jing-wei, LI Hong, LIU Ying, ZHAO Xiu-chen, WANG Yu-feng. Effect of CTAB on Morphology and Magnetic Properties of Cobalt Particles Prepared by Liquid Phase Reduction Method. Journal of Materials Engineering, 2014, 0(8): 21-26.
链接本文:  
http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2014.08.004      或      http://jme.biam.ac.cn/CN/Y2014/V0/I8/21
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