Application of Nanocrystalline Magnetic Materials in Electromechanical Devices

Application of nanocrystalline magnetic materials in electromechanical devices is increasingly being adopted, helping to solve energy-saving problems and global warming. Compared with conventional silicon steel materials, nanocrystalline materials show faster flux reversal, lower magnetic loss and more versatile property modification, which result in the successful application in modern electronic devices. Nanocrystalline magnetic materials will be increasingly popularized and used in power electronics, telecommunication equipment and electronic article surveillance systems due to the demands for smaller and efficient devices in the future.

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Application of Amorphous Alloy in the New Energy-Efficient Electrical Motor

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.48-49.246 ◽

2011 ◽

Vol 48-49 ◽

pp. 246-248 ◽

Cited By ~ 9

Author(s):

Li Jun Wang ◽

Jie Qiong Li ◽

Shan Hong Li ◽

Guang Qiang Zhang ◽

Shu Lin Huang

Keyword(s):

Amorphous Alloy ◽

Energy Efficient ◽

Magnetic Loss ◽

Device Fabrication ◽

Surveillance Systems ◽

Fabrication Technology ◽

Flux Reversal ◽

Telecommunication Equipment ◽

New Energy ◽

Property Modification

Application of amorphous alloy in highly efficient and power dense motors is increasingly being adopted, helping to solve global warming and energy-saving problems. Compared with conventional silicon steel materials, amorphous alloy shows faster flux reversal, lower magnetic loss and more versatile property modification, which result in the possible application in power electronics, telecommunication equipment, electronic article surveillance systems in the future. Some fundamental problems associated with materials processing and device fabrication technology remain to be further improved.

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Developing a reference material set for the magnetic properties of NdFeB alloy-based hard magnetic materials

Reference materials ◽

10.20915/2077-1177-2019-15-1-21-27 ◽

2019 ◽

Vol 15 (1) ◽

pp. 21-27

Author(s):

E. A. Volegova ◽

T. I. Maslova ◽

V. O. Vas’kovskiy ◽

A. S. Volegov

Keyword(s):

Magnetic Properties ◽

Magnetic Materials ◽

Permanent Magnets ◽

Magnetic Loss ◽

Magnetic Hysteresis ◽

Hysteresis Loops ◽

Magnetic Hysteresis Loop ◽

Magnetic Characteristics ◽

Hard Magnetic Materials ◽

Certified Values

Introduction The introduction indicates the need for the use of permanent magnets in various technology fields. The necessity of measuring the limit magnetic hysteresis loop for the correct calculation of magnetic system parameters is considered. The main sources of error when measuring boundary hysteresis loops are given. The practical impossibility of verifying blocks of magnetic measuring systems element-by-element is noted. This paper is devoted to the development of reference materials (RMs) for the magnetic properties of hard magnetic materials based on Nd2Fe14B, a highly anisotropic intermetallic compound.Materials and measuring methods Nd-Fe-B permanent magnets were selected as the material for developing the RMs. RM certified values were established using a CYCLE‑3 apparatus included in the GET 198‑2017 State Primary Measurement Standard for units of magnetic loss power, magnetic induction of constant magnetic field in a range from 0.1 to 2.5 T and magnetic flux in a range from 1·10–5 to 3·10–2 Wb.Results and its discussion Based on the experimentally obtained boundary hysteresis loops, the magnetic characteristics were evaluated, the interval of permitted certified values was set, the measurement result uncertainty of certified values was estimated, the RM validity period was established and the first RM batch was released.Conclusion On the basis of conducted studies, the RM type for magnetic properties of NdFeB alloy-based hard magnetic materials was approved (MS NdFeB set). The developed RM set was registered under the numbers GSO 11059–2018 / GSO 11062–2018 in the State RM Register of the Russian Federation.

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Miscellaneous Applications of Intermetallic Compounds

MRS Bulletin ◽

10.1557/s088376940003551x ◽

1996 ◽

Vol 21 (5) ◽

pp. 50-55 ◽

Cited By ~ 6

Author(s):

L.McD. Schetky

Keyword(s):

Intermetallic Compounds ◽

Metal Matrix ◽

Heat Storage ◽

Storage Systems ◽

Electronic Devices ◽

Matrix Composites ◽

Gold Alloys ◽

Dental Amalgams ◽

Property Modification ◽

Nuclear Applications

So ubiquitous are intermetallic compounds (IMCs) in all areas of materials application that examples of their use in industrial, medical, consumer, and military products are almost limitless. We will in this brief discussion attempt to identify some of the more important of these applications, which we categorize as miscellaneous. These include shape-memory alloys (SMAs), gold alloys used in jewelry, dental amalgams, tribology applications, diffusion barriers in electronic devices, elevated-heat storage systems, nuclear applications, metal-matrix composites, and high damping alloys. In some cases, the IMC is present as a precipitate or dispersed particle that provides strengthening or other property modification while in other examples, the IMC is employed in bulk form.

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Mechanical effect on electrical conductivity of magnetic materials

Insight - Non-Destructive Testing and Condition Monitoring ◽

10.1784/insi.2020.62.10.584 ◽

2020 ◽

Vol 62 (10) ◽

pp. 584-587

Author(s):

Fuchen Zhang ◽

Hongmei Li ◽

Ruiqing Jia

Keyword(s):

Electrical Conductivity ◽

Plastic Deformation ◽

Carbon Steel ◽

Aluminium Alloy ◽

Magnetic Materials ◽

Mechanical Effect ◽

Silicon Steel ◽

Data Measurement ◽

Resistance Coefficients

To study the mechanical effect on electrical conductivity of magnetic materials, the electrical conductivity of silicon steel, carbon steel and aluminium alloy with different resistance coefficients at the stage of elasticity deformation and plastic deformation were studied by measuring the resistance. Fitting models were established through theorisation and data measurement and corresponding parameters were given. The following results were obtained. At the stage of elasticity deformation, the electrical conductivity of the material increased rapidly at first and then slowly increased with the increase of stress. At the stage of plastic deformation, the electrical conductivity decreased approximately linearly with the increase of plastic deformation.

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Optimization of Power Plant for Telecom Sector Based on Embedded System

Mehran University Research Journal of Engineering and Technology ◽

10.22581/muet1982.1901.17 ◽

2019 ◽

Vol 38 (1) ◽

pp. 209-220

Author(s):

Sarang Karim ◽

Halar Haleem Memon ◽

Shahzeb Ansari ◽

Kashif Hussain ◽

Bhawani Shanker Chowdhry

Keyword(s):

Embedded System ◽

Power Density ◽

System Modeling ◽

Electronic Devices ◽

Diesel Generator ◽

Telecommunication Equipment ◽

Switch Mode ◽

Virtual System ◽

Telecom Sector ◽

Rectification Process

Modern Telecom Sector is eventually facing exceptionally tough challenges because of continuous and unexpected increase in power density requirement for the communicating machinery and equipment. To fulfil the power requirements for the equipment, a significant architecture and an optimal technique must be introduced. In this paper, a microcontroller-based optimization use of power-density has been carried out. Meeting above requirements, various equipment and electronic devices are employed. We have designed a microcontroller-based system via PROTEUS Virtual System Modeling to acquire efficient and effective results. The main focus of our work is to supply the power to Telecom equipment in meantime. The power is feeding on batteries and DG (Diesel Generator) set, depending on the condition of the power requirements. The changeover operations are performed by different relays, which are dully programmed via a microcontroller in Keil software. The power capacity of Telecom ((Telecommunication) equipment is ranged from 39-48 Volts DC. The rectification process is done by switch mode rectifiers instead of linear rectifiers. Because the switch-mode rectifier technology has brought fabulous improvements in power density as compared to linear rectifiers. This is done via simulation of the smart switch in PROTEUS software. The outcomes of the proposed system are costeffective in terms of fuel consumption of DG.

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Fe-based Soft Magnetic Materials for Electronic Devices

Acta Mechanica Slovaca ◽

10.21496/ams.2016.024 ◽

2016 ◽

Vol 20 (3) ◽

pp. 58-61

Author(s):

Denisa Olekšáková

Keyword(s):

Magnetic Materials ◽

Electronic Devices ◽

Soft Magnetic Materials ◽

Soft Magnetic

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Recent Advances in Design and Fabrication of Nanocomposites for Electromagnetic Wave Shielding and Absorbing

Materials ◽

10.3390/ma14154148 ◽

2021 ◽

Vol 14 (15) ◽

pp. 4148

Author(s):

Yang Huang ◽

Ming Chen ◽

Aming Xie ◽

Yu Wang ◽

Xiao Xu

Keyword(s):

Information Technologies ◽

Magnetic Loss ◽

Rapid Development ◽

Electronic Devices ◽

Metal Organic Frameworks ◽

Normal Operation ◽

Future Prospects ◽

Electronic Apparatus ◽

Magnetic Components ◽

Metal Organic

Electromagnetic (EM) pollution has raised significant concerns to human health with the rapid development of electronic devices and wireless information technologies, and created adverse effects on the normal operation of the sensitive electronic apparatus. Notably, the EM absorbers with either dielectric loss or magnetic loss can hardly perform efficient absorption, which thereby limits their applications in the coming 5G era. In such a context, the hotspot materials reported recently, such as graphene, MXenes, and metal-organic frameworks (MOF)-derived materials, etc., have been explored and applied as EM absorbing and shielding materials owing to their tunable heterostructures, as well as the facile incorporation of both dielectric and magnetic components. In this review, we deliver a comprehensive literature survey according to the types of EM absorbing and shielding materials, and interpret the connectivity and regularity among them on the basis of absorbing mechanisms and microstructures. Finally, the challenges and the future prospects of the EM dissipating materials are also discussed accordingly.

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Analysis of magnetic losses in Fe-polymer composites

Journal of Electrical Engineering ◽

10.2478/jee-2018-0073 ◽

2018 ◽

Vol 69 (6) ◽

pp. 454-457

Author(s):

Mariusz Najgebauer ◽

Adam Jakubas ◽

Jan Szczygłowski

Keyword(s):

Polymer Composites ◽

Magnetic Materials ◽

Electronic Devices ◽

Soft Magnetic Materials ◽

Magnetic Losses ◽

Soft Magnetic ◽

Magnetic Composites ◽

Magnetic Cores ◽

Maximum Induction ◽

Soft Magnetic Composites

Abstract The most important properties of soft magnetic materials are peak induction and magnetic losses, determining the size and efficiency of electric devices. Conventional soft magnetic materials are not suitable for the construction of miniaturized magnetic cores. Soft magnetic composites meet miniaturization requirements of electric and electronic devices. In this paper, magnetic losses in self-developed Fe-polymer composites are analyzed. The frequency dependencies of magnetic losses are measured at different level of maximum induction. The influence of Fe-grain size on magnetic losses is also discussed.

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