(Ebook PDF) Modern Permanent Magnets 1st Edition by John Croat, John Ormerod 0323886582 978-0323886581 full chapters

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ISBN-10 ‏ : ‎ 0323886582

ISBN-13 ‏ : ‎ 978-0323886581

Author : John J. Croat, John Ormerod

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.

Modern Permanent Magnets 1st Table of contents:

Chapter 1 The history of permanent ­magnets
Abstract
1.1 Introduction
1.2 Lodestones: the first permanent magnets
1.3 Early permanent magnet studies
1.4 The era of steel permanent magnets
1.5 The discovery of alnico permanent magnets
1.6 The discovery of hard ferrite magnets
1.7 The discovery of Sm-Co permanent magnets
1.8 The discovery of NdFeB permanent magnets
1.9 The discovery of Sm-Fe-N permanent magnets
1.10 Future permanent magnet materials
1.11 Summary
References
Chapter 2 Fundamental properties of permanent magnets
Abstract
2.1 Introduction
2.2 The different families and types of permanent magnets
2.3 Key magnetic parameters
2.4 On the origin of magnetism
2.5 The different types of magnetism
2.6 The origin of anisotropy in permanent magnets
2.7 Magnetic domains and domain walls
2.8 Magnetic hysteresis
2.9 Coercivity mechanism in modern permanent magnets
2.10 Stability of permanent magnets
References
Chapter 3 Recent advances in hard ­ferrite magnets
Abstract
3.1 Introduction
3.2 Historical overview of M-type Sr- and Ba- Hexaferrites
3.3 Crystal structure, intrinsic magnetic properties, microstructure and morphology
3.4 Advances towards the improvement of intrinsic magnetic properties
3.5 Industrial fabrication routes
3.6 Recycling efforts, recovery, and reusability in production line
3.7 Applications of hexaferrites: present and perspectives
References
Chapter 4 Modern Sm-Co permanent magnets
Abstract
4.1 Introduction
4.2 Manufacturing process of Sm-Co magnets
4.3 High (BH)max Sm2Co17 type permanent magnets
4.4 Temperature compensated Sm-Co magnets
4.5 Ultra-high temperature Sm-Co magnets with small reversible temperature coefficient of Br
4.6 Performance of Sm-Co magnets in special environments
4.7 Laminated Sm-Co magnets
4.8 Additive manufacturing
4.9 Small magnets
4.10 Sm-Co nanoparticles and nanoflakes for nanocomposite magnets
4.11 Summary
References
Chapter 5 The status of sintered NdFeB magnets
Abstract
5.1 Introduction
5.2 History of the development of Nd-Fe-B
5.3 Compositions of the NdFeB sintered magnets and their magnetic properties
5.4 Production process for sintered NdFeB magnets
5.5 Progress in the microstructure investigation
5.6 Development of HRE-Free and reduced HRE magnets
5.7 Ultimate NdFeB sintered magnets for EV traction motors
References
Chapter 6 Compression bonded NdFeB permanent magnets
Abstract
6.1 Introduction
6.2 The compression molding process
6.3 Isotropic compression bonded NdFeB permanent magnets
6.4 Anisotropic hot deformed NdFeB compression bonded magnets
6.5 Compression molded HDDR permanent magnets
References
Chapter 7 Injection molded permanent magnets
Abstract
7.1 Introduction
7.2 Overview of applications, basic parameters and materials
7.3 Manufacturing
7.4 Polarization patterns
7.5 Design of in-mold magnetized magnets
7.6 Design of pulse magnetized magnets
7.7 Applications – Sensors
7.8 Applications – Electrical machines
7.9 Summary
Acknowledgments
References
Chapter 8 Hot formed NdFeB magnets
Abstract
8.1 Introduction
8.2 Development of hot-formed Nd-Fe-B magnets
8.3 Characteristics of hot-deformed Nd-Fe-B magnets
8.4 Fundamental research
8.5 Applications
8.6 Future outlook
8.7 Concluding remarks
Acknowledgments
References
Chapter 09 Bonded Sm-Fe-N permanent magnets
Abstract
9.1 Introduction
9.2 Interstitial modification
9.3 Basic characteristics of Sm-Fe-N compounds
9.4 Magnet processing
9.5 Applications
9.6 Conclusion
Acknowledgments
References
Chapter 10 Critical materials for permanent magnets
Abstract
10.1 Introduction
10.2 What is a critical material?
10.3 Critical materials in permanent magnets
10.4 Effects of criticality on technology evolution, and vice versa
10.5 Source diversification
10.6 Substitution
10.7 Summary
Acknowledgments
References
Chapter 11 Permanent magnet coatings and testing procedures
Abstract
11.1 Introduction
11.2 Magnet characteristics relevant to coating
11.3 Coating permanent magnets
11.4 Coating test and evaluation
11.5 Summary

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