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IEC TR 62517:2009

(Main)

Magnetizing behaviour of permanent magnets

Magnetizing behaviour of permanent magnets

IEC/TR 62517:2009(E) describes the magnetizing behaviour of permanent magnets in detail covering:
- the relationship between the applied magnetic field strength and the effectively acting internal field strength;
- the initial state prior to magnetization;
- the magnetizing behaviour of all common types of permanent magnets subdivided according to the dominant coercivity mechanisms, namely the nucleation type for sintered Ferrites, RE-Fe-B and SmCo5 magnets, the pinning type for carbon steel and Sm2Co17 magnets and the single domain type for nano-crystalline RE-Fe-B, Alnico and Cr-Fe-Co magnets;
- the recommended magnetizing field strengths for modern permanent magnets compiled in a comprehensive table.

General Information

Status
Published
Publication Date
06-Apr-2009
ICS
01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
29.030 - Magnetic materials
Technical Committee
TC 68 - Magnetic alloys and steels
Drafting Committee
WG 5 - TC 68/WG 5
Current Stage
PPUB - Publication issued
Start Date
15-Jun-2009
Completion Date
07-Apr-2009
Ref Project

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IEC TR 62517:2009 - Magnetizing behaviour of permanent magnets
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IEC/TR 62517
®
Edition 1.0 2009-04
TECHNICAL
REPORT

Magnetizing behaviour of permanent magnets


IEC/TR 62517:2009(E)

---------------------- Page: 1 ----------------------
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---------------------- Page: 2 ----------------------
IEC/TR 62517
®
Edition 1.0 2009-04
TECHNICAL
REPORT

Magnetizing behaviour of permanent magnets


INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
R
ICS 29.030 ISBN 978-2-88910-752-0
® Registered trademark of the International Electrotechnical Commission

---------------------- Page: 3 ----------------------
– 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 Magnetizing behaviour of permanent magnets .8
4.1 General .8
4.2 Nucleation type magnets, sintered Ferrites, RE-Fe-B, SmCo .9
5
4.2.1 General .9
4.2.2 Initial magnetization curve after final heat treatment .9
4.2.3 Approach to saturation after final heat treatment .9
4.2.4 Coercivity mechanism of nucleation type magnets .11
4.2.5 Reversing the magnetization after magnetic saturation .12
4.3 Pinning type magnets, Sm Co .13
2 17
4.3.1 General .13
4.3.2 Initial magnetization curve .
...

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