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Effect of AC field magnetic treatment on the microstructure and magnetic properties of Fe78Si9B13 amorphous alloy
Affiliation:

school of mechanical and electrical engineering, Weifang Uinversity

Clc Number:

TM271+.2, O484.4+3,TQ152

Fund Project:

key research and development project of Shandong Province (2019GGX102016)

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    Abstract:

    The as-quenched (AQ) and after alternating current magnetic field (ACMF) treatment Fe78Si9B13 amorphous ribbons have investigated by XRD, DSC and VSM. The XRD and VSM results show that the nearest neighbor distance (d) and coercivity (Hc) of the ACMF treatment samples first decrease and then increase with increasing alternating current, however, the saturation magnetization varies little with the alternating current. The changes of d and Hc are attributing to the interaction of inhomogeneous characteristics structures in present alloys in the structural magnetic relaxation process. The apparent activity energies, local activity energies and local Avrami exponents of AQ and ACMF treatment samples deduced from DSC curves show that ACMF treatment increased the onset crystallization activity energy and local Avrami exponent and decrease the apparent growth activity energy of the crystallization reactions. The changes of crystallization behavior are ascribe to atomic pair ordering in atomic clusters and diffusion of free volume resulted by the magnetic aftereffect.

    Reference
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[Ma Haijian, Hu Yihua, Li Guangxu, Wang Weimin. Effect of AC field magnetic treatment on the microstructure and magnetic properties of Fe78Si9B13 amorphous alloy[J]. Rare Metal Materials and Engineering,2021,50(7):2428~2434.]
DOI:10.12442/j. issn.1002-185X.20210027

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History
  • Received:January 10,2021
  • Revised:January 25,2021
  • Adopted:March 22,2021
  • Online: August 09,2021
  • Published: July 31,2021