Effect of Annealing Temperature on the Soft Magnetic Properties of Fe_70.43Nb_10.77Si_15.77Cu_2.34B_0.69 Amorphous Aanostrips at 20K, 300K

Abstract:

Since Fe-based amorphous alloys are widely used in magnetic separators, sensors and other fields, it is of practical significance to carry out research on amorphous strips used in this field.The effects of annealing temperature on the soft magnetic properties of Fe_70.43Nb_10.77Si_15.77Cu_2.34B_0.69 amorphous nanostrips with 25 μm and 28 μm thickness prepared by the single roll cold method were investigated at 20 and 300K.Five specimens were annealed at472.12K, 672.12K, 772.12K, 822.12Kand 872.12K, respectively, and their microstructure and magnetic properties were tested viametallographic microscopy, X-ray diffraction, and vibrating specimen magnetometer. At cryogenic temperatureof 20K, specimens annealed at 672,12K exhibited the best magnetic properties, including the coercive forceof8.1265A/m, saturation magnetic induction intensity of1.4351T,and its residual value of 0.2462T. The comparative analysis of experimental results obtained strongly indicates that the soft magnetic properties of the amorphous alloy are significantly improved by the particular annealing treatment.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 773-777
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.773
• Online since: June 2021
• Authors: Sheng Lei*, Shuai Li, Jun Sun, Ji Xiang Zhu, Ya Feng Liu, Hai Li Xu
• Keywords: Annealing Temperature, Cryogenic Temperature, Fe-Based Amorphous Alloy, Magnetic Properties, Strip Thickness

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