ISSN:
1089-7550
Source:
AIP Digital Archive
Topics:
Physics
Notes:
The effects of a new heat treatment technique and a conventional annealing process on the high-frequency core losses (20 kHz) of Fe76Mo3(SiB)21 amorphous alloys have been investigated. The result shows that the remanence and the high-frequency losses can be reduced remarkably by this special treatment. Meanwhile, its coercivity remains lower in the range of 2.39–4.79 (A/m). In studying, it is found that under the condition of this special treatment the phenomena of the enrichment and the depletion of atoms (Fe, Si, B) become more heavier, and the state between the surface layers of metallic glass core is changed, and the degree of partial crystallization of α-Fe can be controlled. The magnetic properties of Fe76Mo3(SiB)21 metallic glasses obtained by the treatment under the technological parameters selected properly are satisfied, as follows: Fe76Mo3(SiB)21—I P2/20 K =5.27 w/kg, P5/20 K =32.61 w/kg, B1=1.043 T, Hc1 =2.88 A/m, Br1/B1 =0.18. Fe76Mo3(SiB)21—I P2/20 K =5.59 w/kg, P5/20 K =37.25 w/kg, B1=0.656 T, Hc1 =4.79 A/m, Br1/B1 =0.11, in which the properties of high-frequency losses are superior to those of the conventional annealed alloys (P2/20 K =12–14 w/kg), and are comparable to those of VITROVAC Co66Fe4(MoSiB)30 and others.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.338658
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