Preparation of Fe (core)/SiO2 (shell) composite particles with improved oxidation-resistance
Preparation of Fe (core)/SiO2 (shell) composite particles with improved oxidation-resistance
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DOI：
10.1016/j.materresbull.2006.02.007
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发表时间：
2006-08-10
影响因子：
5.4
通讯作者：
Zhang, Dongen
中科院分区：
文献类型：
--
作者：
Cheng, Jing;Ni, Xiaomin;Zhang, Dongen
论文描述了具有改进抗氧化性的二氧化硅包覆铁颗粒的制备。利用X射线衍射（XRD）、透射电子显微镜（TEM）和X射线光电子能谱（XPS）对产物进行了表征，结果表明通过硅 - 氧 - 铁键在铁颗粒表面包覆了一层二氧化硅薄膜。采用电感耦合等离子体发射光谱（ICP）定量测定了样品中二氧化硅与铁的含量。颗粒在包覆前后的磁性测量结果几乎保持不变。差热分析（DTA）和热重分析（TG）结果表明，二氧化硅包覆层能有效保护铁核不被氧化。（C）2006爱思唯尔有限公司。保留所有权利。
The preparation of silica coated iron particles with improved oxidation-resistance was described in the paper. XRD, TEM and XPS were used to characterize the product, which indicated that a thin film of silica was coated on the surface of Fe particles through a silica-oxide-iron bond. The content of silica to iron in the sample was quantitatively determined by ICP. Magnetic measurements results of the particles almost kept constant before and after coating process. DTA and TG results showed that the coating shell of silica could effectively protect the Fe cores from oxidation. (C) 2006 Elsevier Ltd. All rights reserved.