Structural Formation and Improved Performances of Chemically Synthesized Composition-Controlled Micron-Sized Fe100−x Co x Particles
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- 作者：Xiaopan Li ; Bai Yang ; Xueying Yang ; Ying Cao…
- 关键词：Structural analysis ; Composition ; controlled Fe100−x Co x particles ; Good compactibility ; High saturation magnetization
- 刊名：Journal of Superconductivity Incorporating Novel Magnetism
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：29
- 期：2
- 页码：417-422
- 全文大小：835 KB
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Bai Yang (1)
Xueying Yang (1)
Ying Cao (1)
Ronghai Yu (1)
1. Key Laboratory of Aerospace Advanced Materials and Performance, Ministry of Education, School of Materials Science and Engineering, Beihang University, Beijing, 100191, China - 刊物类别：Physics and Astronomy
- 刊物主题：Physics
Superconductivity, Superfluidity and Quantum Fluids
Magnetism and Magnetic Materials
Condensed Matter
Characterization and Evaluation Materials - 出版者：Springer New York
- ISSN：1557-1947
文摘
Micron-sized composition-controlled Fe100−lic ">x Co x (20 < x < 75) alloy particles with high purity have been prepared by an optimized reduction reaction. The influence of Co content on the alloying process, structures, and magnetic properties of the products has been studied. The as-synthesized Fe100 −lic ">x Co x with x < 65 exhibit a single bcc crystal structure. A bcc-FeCo/fcc-Co composite structure can be formed in the Fe100−lic ">x Co x products with x > 65. Very slight surface oxidation is observed in all the products. The high purity and single bcc-FeCo phase for the well-alloyed Fe100 −lic ">x Co x particles with x < 65 lead to their high saturation magnetization of 182–220 A m2 kg−1. All the well-alloyed Fe100 −lic ">x Co x show nearly spherical morphologies with an average particle size of 2–8 μm, which results in their good compactibility with a high compacted density of about 7.4–7.6 g cm−3. The simple preparation and improved performances for these chemically synthesized composition-controlled FeCo particles show their great potential for applications in near-net-shaped and complex-shaped FeCo-based soft magnetic composite devices. Keywords Structural analysis Composition-controlled Fe100−lic ">x Co x particles Good compactibility High saturation magnetization