Effect of Cr Addition on Magnetic Properties and Corrosion Resistance of Optimized Co and Fe-Based Amorphous Alloys
1
Department of Physics, Sookmyung Women’s University, Seoul 04310, Korea
2
Center for Energy Materials Research, Korea Institute of Science and Technology, Seoul 02792, Korea
*
Author to whom correspondence should be addressed.
Academic Editor: Andronikos Balaskas
Metals 2021, 11(2), 304; https://doi.org/10.3390/met11020304
Received: 28 January 2021
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Revised: 5 February 2021
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Accepted: 8 February 2021
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Published: 9 February 2021
(This article belongs to the Special Issue Corrosion and Protection of Metals and Alloys and Electrochemical Evaluation)
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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Keywords:
amorphous; magnetic properties; GFA; corrosion resistance
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MDPI and ACS Style
Han, J.; Hong, J.; Kwon, S.; Choi-Yim, H. Effect of Cr Addition on Magnetic Properties and Corrosion Resistance of Optimized Co and Fe-Based Amorphous Alloys. Metals 2021, 11, 304. https://doi.org/10.3390/met11020304
AMA Style
Han J, Hong J, Kwon S, Choi-Yim H. Effect of Cr Addition on Magnetic Properties and Corrosion Resistance of Optimized Co and Fe-Based Amorphous Alloys. Metals. 2021; 11(2):304. https://doi.org/10.3390/met11020304
Chicago/Turabian StyleHan, Jonghee, Jihyun Hong, Seoyeon Kwon, and Haein Choi-Yim. 2021. "Effect of Cr Addition on Magnetic Properties and Corrosion Resistance of Optimized Co and Fe-Based Amorphous Alloys" Metals 11, no. 2: 304. https://doi.org/10.3390/met11020304
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