IEC TR 62517-2009 Magnetization behaviour of permanent magnets《永久磁铁的磁化性能》.pdf
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1、 IEC/TR 62517 Edition 1.0 2009-04 TECHNICAL REPORT Magnetizing behaviour of permanent magnets IEC/TR 62517:2009(E) THIS PUBLICATION IS COPYRIGHT PROTECTED Copyright 2009 IEC, Geneva, Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilize
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9、 If you wish to give us your feedback on this publication or need further assistance, please visit the Customer Service Centre FAQ or contact us: Email: csciec.ch Tel.: +41 22 919 02 11 Fax: +41 22 919 03 00 IEC/TR 62517 Edition 1.0 2009-04 TECHNICAL REPORT Magnetizing behaviour of permanent magnets
10、 INTERNATIONAL ELECTROTECHNICAL COMMISSION R ICS 29.030 PRICE CODE ISBN 2-8318-1037-7 Registered trademark of the International Electrotechnical Commission 2 TR 62517 IEC:2009(E) CONTENTS FOREWORD.4 INTRODUCTION.6 1 Scope.7 2 Effective magnetizing field strength 7 3 Initial magnetization state.8 4 M
11、agnetizing behaviour of permanent magnets8 4.1 General .8 4.2 Nucleation type magnets, sintered Ferrites, RE-Fe-B, SmCo 5 .9 4.2.1 General .9 4.2.2 Initial magnetization curve after final heat treatment9 4.2.3 Approach to saturation after final heat treatment .9 4.2.4 Coercivity mechanism of nucleat
12、ion type magnets.11 4.2.5 Reversing the magnetization after magnetic saturation12 4.3 Pinning type magnets, Sm 2 Co 17 13 4.3.1 General .13 4.3.2 Initial magnetization curve.13 4.3.3 Approach to saturation 14 4.3.4 Coercivity mechanism of pinning type magnets15 4.4 Single domain particle magnets.16
13、4.4.1 General .16 4.4.2 Single domain particle magnets based on magnetocrystalline anisotropy .16 4.4.3 Alnico and CrFeCo magnets 16 5 Conclusions17 Bibliography19 Figure 1 Principal magnetizing behaviour of RE-TM magnets after final heat treatment 8 Figure 2 Magnetizing behaviour of sintered Nd-Dy-
14、Fe-B magnets 9 Figure 3 Magnetizing behaviour of sintered Nd-Dy-Fe-B magnets with various remanence B rand coercivity H cJvalues after final heat treatment 11 Figure 4 Magnetizing behaviour of sintered Nd-Dy-Fe-B magnets with various remanence B rand coercivity H cJvalues after magnetic saturation i
15、n the reverse direction12 Figure 5 Magnetizing behaviour of sintered Sm 2 Co 17magnets with a coercivity H cJof about 800 kA/m.13 Figure 6 Magnetizing behaviour of sintered Sm 2 Co 17magnets with a coercivity H cJof about 2 800 kA/m14 Figure 7 Magnetizing behaviour of sintered Sm-Co magnets with var
16、ious remanence B rand coercivity H cJvalues, left: after final heat treatment and right: after magnetic saturation in the reverse direction.15 Figure 8 Magnetization behaviour of bonded anisotropic HDDR RE-Fe-B magnets compared to a sintered anisotropic RE-Fe-B magnet 16 TR 62517 IEC:2009(E) 3 Table
17、 1 The recommended internal magnetizing field strengths, H mag , to achieve complete saturation for modern permanent magnets, starting from the initial state after the final heat treatment.18 4 TR 62517 IEC:2009(E) INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MAGNETIZING BEHAVIOUR OF PERMANENT MAGNET
18、S FOREWORD 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international co-operation on all questions concerning standardization in t
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