Study on magnetic properties of Fe-based amorphous composites

Abstract

Abstract: The Fe-15Mn-5Si-xCr-0.2C(wt.%) amorphous composite material was prepared by using water-cooled copper crucible smelting and copper mold suction casting. XRD was used to characterize the phase composition of the sample. Vibrating Sample Magnetometercombined with M-H and B-H curves were used to analyze the effect of the change of the Cr element content on the magnetic properties for amorphous composite material. The results show that the Fe-15Mn-5Si-xCr-0.2C (x=1, 2, 4, 6, 8, 10, 12, 13, 14) samples are composed of α-Fe phase, γ-Fe phase and the amorphous phase. As thecontent of Cr element increases, the mixing enthalpy decrease while the mixing entropy increase. The synergistic effect of α-Fe phase and the amorphous phase made the Fe-15Mn-5Si-14Cr-0.2C exhibit the best soft magnetic properties, which the coercive force and saturation magnetization are 16.12A/m and 5.1T, respectively.

Key words: amorphous composite materials, alloying, microstructure, magnetic properties

CLC Number:

TG139.8

ZHAO Yan-chun, WANG Bo, LI Ze-feng, SUN Hao, KOU Sheng-zhong. Study on magnetic properties of Fe-based amorphous composites[J]. Journal of Lanzhou University of Technology, 2021, 47(2): 1-6.

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