| 稀土Dy~(3+)改性铁氧体磁流体磁性粒子的制备及性能测试 |
| |
| 引用本文： | 马啸华,马淮凌,魏敏.稀土Dy~(3+)改性铁氧体磁流体磁性粒子的制备及性能测试[J].应用化工,2006,35(6):425-427. |
| |
| 作者姓名： | 马啸华 马淮凌 魏敏 |
| |
| 作者单位： | 商丘师范学院化学系,河南,商丘,476000 |
| |
| 基金项目： | 河南省自然科学基金;河南省商丘市科技攻关项目 |
| |
| 摘 要： | 研究稀土铁氧体表面改性,采用化学共沉淀法制备了稀土铁氧体磁流体,并用古埃磁天平、透射电子显微镜、X射线衍射仪等对其进行了性能测试。同时探讨了稀土铁氧体磁性粒子的形成机理及表面活性剂对磁流体基本性质的影响;然后,系统地研究了当温度80℃,时间180 m in,表面活性剂用量比0.25,碱过量比0.6时稀土材料Dy3+的加入对铁氧体磁流体性能的影响,并对其进行了理论分析和探讨。
|
| 关 键 词： | 磁流体 稀土 铁氧体 磁性粒子 表面改性 |
| 文章编号： | 1671-3206(2006)06-0425-03 |
| 收稿时间： | 2006-04-13 |
| 修稿时间： | 2006年4月13日 |
Preparation and characterization of the novel magnetic ferrite (Fe3 O4 ) particles modified by Dy3+ |
| |
| MA Xiao-hua,MA Huai-ling,WEI Min.Preparation and characterization of the novel magnetic ferrite (Fe3 O4 ) particles modified by Dy3+[J].Applied chemical industry,2006,35(6):425-427. |
| |
| Authors: | MA Xiao-hua MA Huai-ling WEI Min |
| |
| Affiliation: | Department of Chemistry, Shangqiu Normal University, Shangqiu 476000, China |
| |
| Abstract: | In this paper,we have studied the surface modification of ferrite magnetic fluids and rare-earth ferrite(Dy~(3+)Fe_3O_4) magnetic fluids prepared by chemical coprecipitation method.The properties were investigated by VSM,TEM and XRD,etc.Then discussed the formation mechanism of rareearth ferrite(Dy~(3+)Fe_3O_4) particles and the effect of surfactant on its properties.The effect of Dy~(3+) added on property of magnetic ferrite when temperature was 80℃,reaction time was 180 min,amount of surfactant was(0.25),etc were also studied systematically which is consistent with theoretical analysis. |
| |
| Keywords: | magnetic fluids rare-earth ferrite magnetic particles surface modification |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
