Effect of hot isostatic pressing on soft magnetic properties of Fe-based amorphous/nanocrystalline alloy

doi:10.13251/j.issn.0254-6051.2023.01.033

Abstract

Abstract: Effect of hot isostatic pressing (HIP) process on soft magnetic properties of Fe-based amorphous/nanocrystalline alloys was investigated by introducing HIP into the annealing process of amorphous strip cores on the basis of the optimum annealing temperature for heat treatment at high-purity nitrogen atmosphere. The crystal structure, core inductance L and magnetic loss P_s of Fe-based amorphous strip were measured by X-ray diffractometer, precision magnetic component tester and soft magnetic AC equipment. The results show that at a high frequency of 100 kHz and working magnetic flax density B_m=0.1 T, the coercivity and magnetic loss of the nitrogen-protected annealed specimens are 2.04 A/m and 10.10 W/kg, while the hot isostatic pressed specimen are 1.33 A/m and 6.58 W/kg, which reduced by 53.4% and 34.9%, respectively. The effective permeability and quality factor of the nitrogen-protected annealed specimen are 11 579 and 0.46, while the hot isostatic pressed specimen are 15 980 and 0.70, which increased by 38.0% and 52.2%, respectively.

Key words: hot isostatic pressing, nanocrystalline alloy, effective permeability, magnetic loss

CLC Number:

TG132.2⁺7

Yang Yuanzheng, Shi Junlei, Xiao Guihua, Xu Jia, Chen Mo, Luo Ting. Effect of hot isostatic pressing on soft magnetic properties of Fe-based amorphous/nanocrystalline alloy[J]. Heat Treatment of Metals, 2023, 48(1): 190-192.

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