scholarly journals Estimation of Energy Losses in Nanocrystalline FINEMET Alloys Working at High Frequency

Materials ◽  
2021 ◽  
Vol 14 (24) ◽  
pp. 7745
Author(s):  
Lucian-Gabriel Petrescu ◽  
Maria-Catalina Petrescu ◽  
Emil Cazacu ◽  
Catalin-Daniel Constantinescu
Keyword(s):  
High Frequency ◽  
Core Loss ◽  
Magnetic Core ◽  
Soft Magnetic Materials ◽  
Magnetic Flux Density ◽  
Nominal Composition ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Electromagnetic Devices

Soft magnetic materials are at the core of electromagnetic devices. Planar transformers are essential pieces of equipment working at high frequency. Usually, their magnetic core is made of various types of ferrites or iron-based alloys. An upcoming alternative might be the replacement the ferrites with FINEMET-type alloys, of nominal composition of Fe73.5Si13.5B9Cu3Nb1 (at. %). FINEMET is a nanocrystalline material exhibiting excellent magnetic properties at high frequencies, a soft magnetic alloy that has been in the focus of interest in the last years thanks to its high saturation magnetization, high permeability, and low core loss. Here, we present and discuss the measured and modelled properties of this material. Owing to the limits of the experimental set-up, an estimate of the total magnetic losses within this magnetic material is made, for values greater than the measurement limits of the magnetic flux density and frequency, with reasonable results for potential applications of FINMET-type alloys and thin films in high frequency planar transformer cores.

METGLAS ALLOY 2605S-3

Alloy Digest ◽  
1982 ◽  
Vol 31 (12) ◽  
Keyword(s):  
High Frequency ◽  
Core Loss ◽  
Heat Treating ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Saturation Induction ◽  
High Frequency Devices ◽  
Significant Size ◽  
Wide Operating

Abstract METGLAS Alloy 2605S-3 is an amorphous iron-base soft magnetic alloy that can be annealed to obtain a round B-H loop which results in very low core loss at high frequencies (>1kHz). Because of its high saturation induction relative to ferrites or permalloys, significant size reductions are possible in high-frequency devices by utilizing this alloy. Unlike ferrites, it is suitable for use over a wide operating temperature range without cracking or showing large drops in usable flux density. Its uses include numerous high-frequency devices. This datasheet provides information on composition and physical properties. It also includes information on forming and heat treating. Filing Code: Fe-68. Producer or source: Allied Corporation, Metglass Products Department.

METGLAS ALLOY 2605 SA1

Alloy Digest ◽  
2006 ◽  
Vol 55 (7) ◽  
Keyword(s):  
Physical Properties ◽  
High Frequency ◽  
Power Transformer ◽  
Core Loss ◽  
Heat Treating ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Current Transformers ◽  
Amorphous Iron ◽  
Soft Magnetic Alloy

Abstract Metglas 2605 SA1 is an amorphous iron-base soft magnetic alloy designed for extremely low core loss at distribution and power transformer frequencies and inductions. Applications include high-frequency inductors and current transformers. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on casting, forming, and heat treating. Filing Code: FE-139. Producer or source: Metglas Inc.

Role of Silicon in PM Processed Soft Magnetic Alloy

2010 ◽  
Vol 307 ◽  
pp. 13-19
Author(s):  
Deepika Sharma ◽  
Kamlesh Chandra ◽  
Prabhu Shankar Misra
Keyword(s):  
High Temperature ◽  
Atmospheric Oxygen ◽  
Hydrogen Atmosphere ◽  
Soft Magnetic Materials ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Cold Shortness ◽  
Powder Particles

Iron-Phosphorus based soft magnetic materials are known for their hot and cold shortness. The present investigation deals with the development of high-density Fe-P based alloys in the form of very thin sheets (0.1mm) by proper soaking of them at a high temperature so as to eliminate Iron-Phosphide eutectic and bring the phosphorus entirely into solution in the iron. It has also been possible to eliminate the use of a hydrogen atmosphere during sintering by using carbon to form CO gas within the compact by reaction with the oxygen of the iron powder particles. A glassy ceramic coating applied over the compact serves as a protective coating in order to avoid atmospheric oxygen attack over the compact held at high temperature. The Fe-0.3wt% P- 0.4wt% Si alloy so formed yielded coercivities as low as 0.42 Oe, resistivities as high as 28.4 µΩcm and total losses as low as 0.132 W/Kg. Such a combination of properties may make the alloy suitable for application in magnetic relays and transformer cores.

Influence of Annealing on Magnetic Performance for 1K107 Amorphous-Nanocrystalline Soft Magnetic Alloy

2013 ◽  
Vol 745-746 ◽  
pp. 357-362
Author(s):  
Wei Lv
Keyword(s):  
Core Loss ◽  
Magnetic Alloy ◽  
X Ray Diffraction ◽  
Soft Magnetic ◽  
Soft Magnetic Alloy ◽  
Remanence Ratio ◽  
Bridge Rectifier ◽  
Nanocrystalline Soft Magnetic Alloy ◽  
Transversal Magnetic ◽  
Microstructure And Magnetic Properties

The morphology, microstructure and magnetic properties in 1K107 alloy annealed by nitrogen and transversal magnetic (N2) are studied. The results show that coercivity (Hc), remanence ratio (Br/Bs), core loss (Pc), and effective permeability (μe) are efficiently optimized by transversal magnetic annealing (N2) according to the methods of digital electric bridge, rectifier bridge, X-ray diffraction (XRD), and field emission scanning electron microscopy (FESEM), etc.

METGLAS ALLOY 2605S-2

Alloy Digest ◽  
1982 ◽  
Vol 31 (4) ◽  
Keyword(s):  
Power Transformer ◽  
Core Loss ◽  
Heat Treating ◽  
Power Transformers ◽  
Magnetic Alloy ◽  
Soft Magnetic ◽  
Low Frequencies ◽  
Soft Magnetic Alloy ◽  
Improved Performance ◽  
Lower Temperature

Abstract METGLAS Alloy 2605S-2 is an amorphous iron-base soft magnetic alloy designed for extremely low core loss at distribution and power transformer frequencies and inductions. It offers improved performance over METGLAS Alloy 2605SC (Alloy Digest Fe-64, February 1982) at the higher operating temperatures (100 C) of these devices. Alloy 2605S-2 has a lower temperature coefficient of saturation than Alloy 2605SC. Applications include power transformers and other devices operating at low frequencies. This datasheet provides information on composition and physical properties. It also includes information on forming and heat treating. Filing Code: Fe-65. Producer or source: Allied Corporation, Metglass Products Department.

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