화학용액혼합과 수소환원법으로 제조된 나노 구조 Fe-Co 합금분말의 미세구조 및 자성 특성
Microstructure and Magnetic Properties of Nanostructured Fe-Co Alloy Powders Produced by Chemical Solution Mixing and Hydrogen Reduction Methods
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Abstract
The purpose of this study is the fabrication of nano-sized Fe-Co alloy powders with soft magnetic properties by the slurry mixing and hydrogen reduction (SMHR) process. FeCl2 and CoCl2 powders with 99.9% purities were used for synthesizing nanostructured Fe-Co alloy powder. Nano-sized Fe-Co alloy powders were successfully fabricated using SMHR, which was performed at 500℃ for 1 h in H2 atmosphere. The fabricated Fe-Co alloy powders showed α' phase (ordered body centered cubic) with the average particle size of 45 nm. The SMHR powder exhibited low coercivity force of 32.5 Oe and saturation magnetization of 214 emu/g.