Preparation of Fe (core)/SiO2 (shell) composite particles with improved oxidation-resistance

被引：48
作者：
Cheng, Jing
Ni, Xiaomin
Zheng, Huagui [1 ]
Li, Beibei
Zhang, Xiaojun
Zhang, Dongen
机构：
[1] Univ Sci & Technol China, Dept Chem, Hefei 230026, Anhui, Peoples R China
[2] Univ Sci & Technol China, Natl Lab Phys Sci Microscale, Hefei 230026, Anhui, Peoples R China
来源：
MATERIALS RESEARCH BULLETIN | 2006年 / 41卷 / 08期
关键词：
metals; surface; magnetic materials; sol-gel chemistry;
D O I：
10.1016/j.materresbull.2006.02.007
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
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.
引用
收藏
页码：1424 / 1429
页数：6
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