Modern Permanent Magnets

Author : John J. Croat,John Ormerod
Publisher : Woodhead Publishing
Page : 455 pages
File Size : 44,9 Mb
Release : 2022-01-27
Category : Technology & Engineering
ISBN : 9780323886406

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Modern Permanent Magnets by John J. Croat,John Ormerod Pdf

Modern Permanent Magnets provides an update on the status and recent technical developments that have occurred in the various families of permanent magnets produced today. The book gives an overview of the key advances of permanent magnet materials that have occurred in the last twenty years. Sections cover the history of permanent magnets, their fundamental properties, an overview of the important families of permanent magnets, coatings used to protect permanent magnets and the various tests used to confirm specifications are discussed. Finally, the major applications for each family of permanent magnets and the size of the market is provided. The book also includes an Appendix that provides a Glossary of Magnetic Terms to assist the readers in better understanding the technical terms used in other chapters. This book is an ideal resource for materials scientists and engineers working in academia and industry R&D. Provides an in-depth overview of all of the important families of permanent magnets produced today Includes background information on the fundamental properties of permanent magnets, major applications of each family of permanent magnets, and advances in coatings and coating technology Reviews the fundamentals of permanent magnet design

Author : Jacek F. Gieras,Jian-Xin Shen
Publisher : CRC Press
Page : 332 pages
File Size : 55,7 Mb
Release : 2022-12-05
Category : Technology & Engineering
ISBN : 9781000777017

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Modern Permanent Magnet Electric Machines by Jacek F. Gieras,Jian-Xin Shen Pdf

The late 1980s saw the beginning of the PM brushless machine era, with the invention of high-energy density permanent magnets (PM) and the development of power electronics. Although induction motors are now the most popular electric motors, the impact of PM brushless machines on electromechanical drives is significant. Today, PM machines come second to induction machines. Replacement of electromagnetic field excitation systems by PMs brings the following benefits: No electrical energy is absorbed by the field excitation system and thus there are no excitation losses, causing substantial increase in efficiency Higher power density (kW/kg) and/or torque density (Nm/kg) than electromagnetic excitation Better dynamic performance than motors with electromagnetic excitation (higher magnetic flux density in the air gap) Simplification of construction and maintenance Less expensive for some types of machines Modern Permanent Magnet Electric Machines: Theory and Control serves as a textbook for undergraduate power engineering students who want to supplement and expand their knowledge in the fundamentals of magnetism, soft magnetic materials, permanent magnets (PMs), calculation of magnetic circuits with PMs, modern PM brushed DC machines and their controls, modern PM brushless DC motors and drive control, and modern PM generators. The book can help students learn more about electrical machines and can serve as a prescribed text for teaching elective undergraduate courses such as modern permanent magnet electrical machines. Since the book is written in a simple scientific language and without redundant mathematics, it can also be used by practicing engineers and managers employed in electrical machinery or electromagnetic device industries.

Author : Peter Campbell
Publisher : Cambridge University Press
Page : 228 pages
File Size : 50,7 Mb
Release : 1996-06-28
Category : Science
ISBN : 0521566886

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Permanent Magnet Materials and Their Application by Peter Campbell Pdf

Comprehensive design text for permanent magnets and their application.

Author : K.H.J. Buschow
Publisher : Trans Tech Publications Ltd
Page : 90 pages
File Size : 42,9 Mb
Release : 1999-01-10
Category : Technology & Engineering
ISBN : 9783035705881

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Permanent Magnetic Materials and their Applications by K.H.J. Buschow Pdf

Permanent magnets play an increasingly important role in modern society because they are vital components of numerous domestic and industrial devices. The last few decades have witnessed a quite extraordinary development in the use of hard magnetic materials, especially after the advent of rare earth permanent magnets. The rare earth permanent magnets are unequalled because they combine a high magnetization with an extraordinary magnetic hardness which allows the use of such magnets having the extreme shapes and small dimensions as required in modern devices.

Author : J.M.D Coey
Publisher : Routledge
Page : 418 pages
File Size : 55,8 Mb
Release : 2019-07-16
Category : Science
ISBN : 9781351425414

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Permanent Magnetism by J.M.D Coey Pdf

One of the first books to approach magnetism from a metal physics perspective, Permanent Magnetism presents research ideas that are being translated into commercial reality for ferrite and Nd-Fe-B magnets, and follows the discovery of interstitial, intermetallic materials. Written by well-known authors, the book contains a comprehensive yet concise treatment of the fundamental theory underlying permanent magnetism and illustrates applications with modern, permanent magnetic materials, including ceramics and intermetallic compounds. Each chapter contains worked examples to reinforce applications and the appendices include detailed mathematics and tabular data on material properties.

Author : Rollin J. Parker
Publisher : Wiley-VCH
Page : 0 pages
File Size : 48,6 Mb
Release : 1990-04-02
Category : Science
ISBN : 0471822930

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Advances in Permanent Magnetism by Rollin J. Parker Pdf

A guide to permanent-magnet property selection and design in magnetoelectric devices. Provides a unified and comprehensive treatment of permanent magnetism, from its origins to its use in modern energy-conversion devices. Presents the history of permanent magnetism and describes the properties of permanent-magnet systems, emphasizing the new rare earth magnets. Covers all major types of permanent magnets and their typical applications, aspects of design, circuit solutions, device parameters and measurements.

Author : J.M.D Coey
Publisher : Routledge
Page : 417 pages
File Size : 52,8 Mb
Release : 2019-07-16
Category : Science
ISBN : 9781351425421

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Permanent Magnetism by J.M.D Coey Pdf

One of the first books to approach magnetism from a metal physics perspective, Permanent Magnetism presents research ideas that are being translated into commercial reality for ferrite and Nd-Fe-B magnets, and follows the discovery of interstitial, intermetallic materials. Written by well-known authors, the book contains a comprehensive yet concise treatment of the fundamental theory underlying permanent magnetism and illustrates applications with modern, permanent magnetic materials, including ceramics and intermetallic compounds. Each chapter contains worked examples to reinforce applications and the appendices include detailed mathematics and tabular data on material properties.

Author : Dipti Ranjan Sahu
Publisher : Intechopen
Page : 0 pages
File Size : 42,5 Mb
Release : 2024-04-03
Category : Science
ISBN : 1837690448

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Modern Permanent Magnets - Fundamentals and Applications by Dipti Ranjan Sahu Pdf

Modern permanent magnets are important for many industries and technologies. New developments in processing techniques, materials, and methods used to produce different types of modern permanent magnets are very useful for devices and industrial applications. This book presents an overview of available permanent magnets and recent developments in modern magnets. Chapters address such topics as light-matter interaction in 2D magnets, the environmental impact of permanent magnets, and advances in nanocrystalline permanent magnets. This book is a valuable resource for undergraduate and graduate students as well as professionals like engineers, scientists, researchers, technicians, and technology managers.

Author : Alex Goldman
Publisher : Springer Science & Business Media
Page : 656 pages
File Size : 47,6 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9781461549178

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Handbook of Modern Ferromagnetic Materials by Alex Goldman Pdf

Below is a copy of Professor Takeshi Takei's original preface that he wrote for my first book, Modem Ferrite Teclmology. I was proud to receive this preface and include it here with pride and affection. We were saddened to learn of his death at 92 on March 12, 1992. Preface It is now some 50 years since ferrites debuted as an important new category of magnetic materials. They were prized for a range of properties that had no equivalents in existing metal magnetic materials, and it was not long before full-fledged research and development efforts were underway. Today, ferrites are employed in a truly wide range of applications, and the efforts of the many men and women working in the field are yielding many highly intriguing results. New, high-performance products are appearing one after another, and it would seem we have only scratched the surface of the hidden possibilities of these fascinating materials. Dr. Alex Goldman is well qualified to talk about the state of the art in ferrites. For many years Dr. Goldman has been heavily involved in the field as director of the research and development division of Spang & Co. and other enterprises. This book, Modem Ferrite Technology, based in part on his own experiences, presents a valuable overview of the field. It is testimony to his commitment and bountiful knowledge about one oftoday's most intriguing areas of technology.

Author : Edward P. Furlani
Publisher : Elsevier
Page : 538 pages
File Size : 42,9 Mb
Release : 2001-09-05
Category : Science
ISBN : 9780080513690

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Permanent Magnet and Electromechanical Devices by Edward P. Furlani Pdf

The book provides both the theoretical and the applied background needed to predict magnetic fields. The theoretical presentation is reinforced with over 60 solved examples of practical engineering applications such as the design of magnetic components like solenoids, which are electromagnetic coils that are moved by electric currents and activate other devices such as circuit breakers. Other design applications would be for permanent magnet structures such as bearings and couplings, which are hardware mechanisms used to fashion a temporary connection between two wires.This book is written for use as a text or reference by researchers, engineers, professors, and students engaged in the research, development, study, and manufacture of permanent magnets and electromechanical devices. It can serve as a primary or supplemental text for upper level courses in electrical engineering on electromagnetic theory, electronic and magnetic materials, and electromagnetic engineering.

Author : John J. Croat
Publisher : Woodhead Publishing
Page : 382 pages
File Size : 51,7 Mb
Release : 2017-10-24
Category : Technology & Engineering
ISBN : 9780081022269

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Rapidly Solidified Neodymium-Iron-Boron Permanent Magnets by John J. Croat Pdf

Rapidly Solidified Neodymium-Iron-Boron Permanent Magnets details the basic properties of melt spun NdFeB materials and the entire manufacturing process for rapidly solidified NdFeB permanent magnets. It covers the manufacturing process from the commercial production of the melt spun or rapidly solidified powder, to the production and properties of both isotropic bonded Nd and hot deformed anisotropic NdFeB magnets. In addition, the book discusses the development and history of bonded rare earth transition metal magnets and the discovery of the NdFeB compound, also covering melt spun NdFeB alloys and detailing the magnetization process and spring exchange theory. The book goes over the production of melt spinning development, the operation of a melt spinner, the processing of melt spun powder, commercial grades of NdFeB magnetic powder and gas atomized NdFeB magnetic powders. Lastly, the book touches on the major application and design advantages of bonded Nd Magnets. Features a unique perspective as the author is not only the inventor of NdFeB magnetic powder, but also played a key role in developing many of the technologies covered Provides a comprehensive look at the history, fundamental properties, production processes, design and applications of bonded NdFeB magnets Includes discussion of the rare earth supply challenge, politics, and systems as it impacts bonded NdFeB magnets

Author : E. A. Nesbitt,Jack Harry Wernick
Publisher : Academic Press
Page : 224 pages
File Size : 53,7 Mb
Release : 1973-01-28
Category : Science
ISBN : UCAL:B4515426

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Rare Earth Permanent Magnets by E. A. Nesbitt,Jack Harry Wernick Pdf

Rare Earth Permanent Magnets presents the discussion of the metallurgy and properties of rare earth permanent magnet alloys. The monograph initially provides the elementary aspects of magnetism to enable the reader sufficient understanding of permanent magnetism. The book then discusses the rare earth elements and their alloys with cobalt, copper, and iron; the magnetic properties of various intermetallic compounds relevant to permanent magnets; a detailed account of cast permanent magnets of the Co-Cu-Sm and Co-Cu-Ce systems and their modifications; the important methods of making and manufacturing rare earth permanent magnets by powder metallurgy methods; and comparisons between the well-known permanent magnets and the new rare earth materials. This text will be of value to students, materials engineers, and scientists.

Author : Lester R. Moskowitz
Publisher : Krieger Publishing Company
Page : 984 pages
File Size : 52,9 Mb
Release : 1995
Category : Science
ISBN : UCSD:31822021571765

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Permanent Magnet Design and Application Handbook by Lester R. Moskowitz Pdf

Covering the design and applications of permanent magnets, this study lists properties of over 400 materials and presents diverse magnet information needed to design products rather than present theory. Appendices provide demagnetisation curves and magnetic/physical properties.

Author : Alex Goldman
Publisher : Springer Science & Business Media
Page : 446 pages
File Size : 54,8 Mb
Release : 2006-09-28
Category : Science
ISBN : 9780387294131

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Modern Ferrite Technology by Alex Goldman Pdf

Revision of a classic reference on ferrite technology Includes fundamentals as well as applications Covers new areas such as nanoferrites, new high frequency power supply materials, magnetoresistive ferrites for magnetic recording

Author : I.V. Mitchell
Publisher : Springer
Page : 300 pages
File Size : 44,5 Mb
Release : 1985
Category : Technology & Engineering
ISBN : UCAL:B4154602

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Nd-Fe Permanent Magnets by I.V. Mitchell Pdf