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Role of Co on microstructure, crystallization behavior and soft magnetic properties of (Fe1−xCox)84Si4B8P3Cu1 nanocrystalline alloys

  • R. Xiang
  • S. X. Zhou
  • B. S. Dong
  • G. Q. Zhang
  • Z. Z. Li
  • Y. G. Wang
Article

Abstract

In this paper, we describe the effects of substituting Co for Fe on the microstructure, crystallisation behaviour, and soft magnetic properties of (Fe1−x Co x )84Si4B8P3Cu1 (x = 0.35, 0.5, 0.65) alloys. The results demonstrate that as the Co content in the alloy increases, the heat treatment temperature also improves. When x = 0.35 Co was substituted for Fe in Fe84Si4B8P3Cu1 alloy, there was a significant enhancement in the interval temperature (ΔT x ) between the two crystallization temperatures, and this resulted in the largest crystalline volume fraction (V cry ). When annealing at 625–800 K, we observed a dual-phase nanocrystalline structure in all the specimens, which was composed of nanocrystals with average grain size of about 9–28 nm embedded in the residual amorphous matrix. The (Fe0.65Co0.35)84Si4B8P3Cu1 nanocrystalline alloy exhibited a high saturation magnetic flux density, B s , of 1.68 T; a low coercivity, H c , of 5.4 A/m; and a high effective permeability, µ e , of 29,600 at 1 kHz. Hence, these results indicate that this alloy is promising for use as a soft magnetic material.

Keywords

Heat Treatment Temperature Effective Permeability Soft Magnetic Property Nanocrystalline Alloy High Saturation Magnetisation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

This work was supported by the National Natural Science Foundation of China under Grant 51341002, by the Science and Technology Program of Beijing under Grant Z141100003814007, and by the National Scientific and Technological Support Projects under Grant 2013BAE08B01.

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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • R. Xiang
    • 1
  • S. X. Zhou
    • 1
  • B. S. Dong
    • 1
  • G. Q. Zhang
    • 1
  • Z. Z. Li
    • 1
  • Y. G. Wang
    • 2
  1. 1.Advanced Technology & Materials Co., Ltd., China Iron & Steel Research Institute GroupBeijingChina
  2. 2.Institute of PhysicsChinese Academy of SciencesBeijingChina

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