Effects of Cr addition on thermal stability, soft magnetic properties and corrosion resistance of FeSiB amorphous alloys

In the Fe-Co alloy system, the addition of Cr improves the glass-forming ability (GFA) with superior soft magnetic properties such as high saturation magnetization (Ms) and low coercivity (Hc). In addition, Cr is considered to be an important factor for improving the corrosion resistance of Fe-based amorphous alloy. Therefore, in the present study, we investigated the GFA, soft magnetic properties, and corrosion resistance of the as-spun ribbons in [Co0.075Fe0.675B0.2Si0.05]100−xCrx (x = 0–8) alloy system. The ribbons were produced using the melt-spinning technique and were characterized by X-ray diffraction, differential scanning calorimetry, thermomechanical analysis, and vibrating sample magnetometer. The Co-Fe-B-Si-Cr alloys exhibited high thermal stability and a high Ms of 0.93–1.53 T. Corrosion properties were evaluated by cyclic voltammetry. The addition of Cr improved the corrosion resistance of the alloys. The alloys with a higher Cr content exhibited a higher corrosion resistance. The optimum combination with soft magnetic properties and corrosion resistance of Fe-co based amorphous alloys can be utilized for extensive fields of application through a variation of Cr contents.

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Retraction: Thermal Stability and Soft Magnetic Properties of Fe56Co7Ni7Zr10-xMxB20 (M=Nb, Ta) Amorphous Alloys

IEEJ Transactions on Fundamentals and Materials ◽

10.1541/ieejfms1990.118.6_706 ◽

1998 ◽

Vol 118 (6) ◽

pp. 706-711

Author(s):

Hisato Koshiba ◽

Akihisa Inoue ◽

Akihiro Makino

Keyword(s):

Thermal Stability ◽

Magnetic Properties ◽

Amorphous Alloys ◽

Soft Magnetic Properties ◽

Soft Magnetic

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Glass formation, magnetic properties, and electrical resistivity of the multi-component FeNbBCuNiCo amorphous alloys

International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ◽

10.1515/ijmr-2020-8055 ◽

2021 ◽

Vol 112 (2) ◽

pp. 137-142

Author(s):

Man Zhu ◽

Chi Zhang ◽

Tao Xu ◽

Lijuan Yao ◽

Yongqin Liu ◽

...

Keyword(s):

Thermal Stability ◽

Magnetic Properties ◽

Electrical Resistivity ◽

Amorphous Alloys ◽

Low Cost ◽

Industrial Applications ◽

High Thermal Stability ◽

Soft Magnetic Properties ◽

Soft Magnetic ◽

Scanning Calorimetry

Abstract The effects of additions of Co and Ni to the FeNbBCu alloys on the glass forming ability (GFA), soft magnetic properties and electrical resistivity of Fe-based amorphous alloys were studied by means of X-ray diffraction, differential scanning calorimetry, vibrating sample magnetometry and four-probe testing. The Fe80–x–y Nb5B14Cu1Co x Ni y alloys exhibit high thermal stability and excellent GFA with T x1 ≥ 735 K and T x1/T m ≥ 0.539. They also show excellent soft magnetic properties with high saturation magnetization of 93– 101 emu g–1 and low coercivity of 0.04 –2.37 Oe. The electrical resistivity of these alloys ranges from 121 μΩ cm to 163 μΩ cm. The newly developed FeNbBCu-CoNi glassy alloys not only possess good GFA and high thermal stability, but also have excellent magnetic properties, high electrical resistivity and low cost. With such promising properties, these alloys have potential for industrial applications.

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