IEC 60404-5-2015 Magnetic Materials - Part 5 Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties《磁性材料 第5部分 永磁(硬磁)材料 磁性能的测量方法》.pdf

1、 IEC 60404-5 Edition 3.0 2015-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Magnetic materials Part 5: Permanent magnet (magnetically hard) materials Methods of measurement of magnetic properties Matriaux magntiques Partie 5: Aimants permanents (magntiques durs) Mthodes de mesure des proprits magnt

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19、e Clients - webstore.iec.ch/csc Si vous dsirez nous donner des commentaires sur cette publication ou si vous avez des questions contactez-nous: csciec.ch. IEC 60404-5 Edition 3.0 2015-04 INTERNATIONAL STANDARD NORME INTERNATIONALE Magnetic materials Part 5: Permanent magnet (magnetically hard) mater

20、ials Methods of measurement of magnetic properties Matriaux magntiques Partie 5: Aimants permanents (magntiques durs) Mthodes de mesure des proprits magntiques INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE ICS 17.220.20; 29.030 ISBN 978-2-8322-2593-6 Registered

21、 trademark of the International Electrotechnical Commission Marque dpose de la Commission Electrotechnique Internationale Warning! Make sure that you obtained this publication from an authorized distributor. Attention! Veuillez vous assurer que vous avez obtenu cette publication via un distributeur

22、agr. 2 IEC 60404-5:2015 IEC 2015 CONTENTS FOREWORD . 3 INTRODUCTION . 5 1 Scope 6 2 Normative references 6 3 Terms and definitions 6 4 Electromagnet and conditions for magnetization 6 4.1 General . 6 4.2 Geometrical conditions . 8 4.3 Electromagnetic conditions . 8 5 Test specimen . 9 6 Determinatio

23、n of the magnetic flux density 10 7 Determination of the magnetic polarization 10 8 Measurement of the magnetic field strength. 11 9 Determination of the demagnetization curve 12 9.1 General . 12 9.2 Principle of determination of the demagnetization curve, test specimen magnetized in the electromagn

24、et 12 9.3 Principle of determination of the demagnetization curve, test specimen magnetized in a superconducting coil or pulse magnetizer 13 10 Determination of the principal characteristics . 14 10.1 Remanent flux density 14 10.2 (BH) maxproduct . 14 10.3 Coercivities H cBand H cJ14 10.4 Determinat

25、ion of the recoil line and the recoil permeability 14 11 Reproducibility . 15 12 Test report . 15 Annex A (normative) Influence of the air-gap between the test specimen and the pole pieces . 17 Annex B (informative) Influence of the ambient temperature on measurement results 18 Bibliography 19 Figur

26、e 1 Demagnetization curve showing (BH) maxpoint 7 Figure 2 Schematic diagram of electromagnet 8 Figure 3 Measuring circuit (schematic) . 13 Figure 4 Demagnetization curve and recoil loop . 15 Figure A.1 Air-gap 17 Table 1 Reproducibility of the measurement of the magnetic characteristics of permanen

27、t magnet materials . 15 Table A.1 d/l ratios . 17 Table B.1 Temperature coefficients of B rand H cJof permanent magnet materials . 18 IEC 60404-5:2015 IEC 2015 3 INTERNATIONAL ELECTROTECHNICAL COMMISSION _ MAGNETIC MATERIALS Part 5: Permanent magnet (magnetically hard) materials Methods of measureme

28、nt of magnetic properties 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 concern

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37、s arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attenti

38、on is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60404-5 has been prepared by IEC technical committee 68: Magnetic alloys a

39、nd steels. This third edition cancels and replaces the second edition published in 1993 and Amendment 1:2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: adaption of the measurement methods and

40、 test conditions to newly introduced magnetically hard materials with coercivity values H cJhigher than 2 MA/m; update of the temperature conditions to allow the measurement of new materials with high temperature coefficients. 4 IEC 60404-5:2015 IEC 2015 The text of this standard is based on the fol

41、lowing documents: FDIS Report on voting 68/497/FDIS 68/505/RVD Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. A list of all parts

42、in the IEC 60404 series, published under the general title Magnetic materials, can be found on the IEC website. The committee has decided that the contents of this publication will remain unchanged until the stability date indicated on the IEC web site under “http:/webstore.iec.ch“ in the data relat

43、ed to the specific publication. At this date, the publication will be reconfirmed, withdrawn, replaced by a revised edition, or amended. IEC 60404-5:2015 IEC 2015 5 INTRODUCTION The previous edition of IEC 60404-5 was issued in October 1993 and amended in 2007. Since then, new applications of NdFeB

44、sintered magnetic materials with intrinsic coercivity, H cJ , higher than 2 MA/m for hybrid electric vehicles and fully electric vehicles have appeared. Thus, IEC TC68 decided in 2011 at their meeting in Ghent to revise IEC 60404-5. For the measurement of the coercivity relating to polarization, H c

45、J , at values higher than 2 MA/m and the measurement of magnetic properties at elevated temperatures, the methods described in the non-normative Technical Reports IEC TR 61807 and IEC TR 62331 can be considered. The ambient temperature previously recommended was (23 5) C. However, for permanent magn

46、et materials such as NdFeB and hard ferrites that have large temperature coefficients, it is strongly recommended that the ambient temperature should be controlled within this range to 1 C or better. It is desirable to apply this temperature recommendation for other hard magnet materials. This recom

47、mendation was already included in IEC 60404-5:1993/AMD1:2007. 6 IEC 60404-5:2015 IEC 2015 MAGNETIC MATERIALS Part 5: Permanent magnet (magnetically hard) materials Methods of measurement of magnetic properties 1 Scope The purpose of this part of IEC 60404 is to define the method of measurement of th

48、e magnetic flux density, magnetic polarization and the magnetic field strength and also to determine the demagnetization curve and recoil line of permanent magnet materials, such as those specified in lEC 60404-8-1 1 1 , the properties of which are presumed homogeneous throughout their volume. The p

49、erformance of a magnetic system is not only dependent on the properties of the permanent magnet material but also on the dimensions of the system, the air-gap and other elements of the magnetic circuit. The methods described in this part of IEC 60404 refer to the measurement of the magnetic properties in a closed magnetic circuit. 2 Normative references The following documents, in whole or i