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IEC TR 61807:1999

Current
Current

The latest, up-to-date edition.

Magnetic properties of magnetically hard materials at elevated temperatures - Methods of measurement
Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English - French

Published date

20-10-1999

Publisher

International Electrotechnical Committee

Foreword
1 Scope
2 Reference documents
3 Definitions
4 Symbols
5 Review of existing permanent magnet materials
6 Measuring equipment
7 Evaluation of measured data
8 Test report
Annex A - Results of an inter-comparison of measurement
          on magnetically hard (permanent magnet)
          material at elevated temperature
      A.1 - Introduction
      A.2 - Test specimens
      A.3 - Method of measurement
      A.4 - Results
      A.5 - Conclusions
Annex B - Example calculations
      B.1 - Magnetically anisotropic sintered NdFeB
            magnet
      B.2 - Magnetically anisotropic sintered
            Sr-ferrite magnet

Provides methods for measuring magnetically hard materials, at elevated temperatures. Magnetically hard materials (permanent magnet materials) are classified in IEC 60404-1 and their properties are specified in IEC 60404-8-1.The methods of measurement of the magnetic properties of magnetically hard materials at room temperature have been specified in IEC 60404-5 for closed magnetic circuits and in IEC 60404-7 for open magnetic circuits, respectively. The applications of magnetically hard materials are now expanding to elevated temperatures and it is therefore required to specify and guarantee the magnetic properties of these materials over their working temperature range.In IEC 60404-8-1 temperature coefficients of remanence (or saturation) and J-coercivity have been specified in addition to basic properties such as maximum magnetic energy product ((BH)max), remanence (Br), B-coercivity (HcB), J-coercivity (HcJ), recoil permeability (µrec) and density.

Committee
TC 68
DevelopmentNote
Stability Date: 2015. (10/2012)
DocumentType
Technical Report
Pages
25
PublisherName
International Electrotechnical Committee
Status
Current

Standards Relationship
NEN NPR IEC/TR 61807 : 1999 Identical

14/30282391 DC : 0 BS EN 60404-5 ED 3.0 - MAGNETIC MATERIALS - PART 5: PERMANENT MAGNET (MAGNETICALLY HARD) MATERIALS - METHODS OF MEASUREMENT OF MAGNETIC PROPERTIES
IEC 60404-5 REDLINE : 3ED 2015 MAGNETIC MATERIALS - PART 5: PERMANENT MAGNET (MAGNETICALLY HARD) MATERIALS - METHODS OF MEASUREMENT OF MAGNETIC PROPERTIES
IEC TR 62331:2005 Pulsed field magnetometry
PD IEC/TR 62331:2005 Pulsed field magnetometry
BS EN 60404-5:2015 Magnetic materials Permanent magnet (magnetically hard) materials. Methods of measurement of magnetic properties
PD IEC/TR 62518:2009 Rare earth sintered magnets. Stability of the magnetic properties at elevated temperatures
IEC 60404-5:2015 RLV Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties
I.S. EN 60404-5:2015 MAGNETIC MATERIALS - PART 5: PERMANENT MAGNET (MAGNETICALLY HARD) MATERIALS - METHODS OF MEASUREMENT OF MAGNETIC PROPERTIES
IEC TR 62518:2009 Rare earth sintered magnets - Stability of the magnetic properties at elevated temperatures
EN 60404-5:2015 Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties

IEC 60050-151:2001 International Electrotechnical Vocabulary (IEV) - Part 151: Electrical and magnetic devices
IEC 60404-8-1:2015 Magnetic materials - Part 8-1: Specifications for individual materials - Magnetically hard materials
IEC 60050-221:1990 International Electrotechnical Vocabulary (IEV) - Part 221: Magnetic materials and components
IEC 60404-5:2015 RLV Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties
IEC 60050-121:1998 International Electrotechnical Vocabulary (IEV) - Part 121: Electromagnetism
IEC 60404-1:2016 Magnetic materials - Part 1: Classification
IEC 60404-7:1982 Magnetic materials. Part 7: Method of measurement of the coercivity of magnetic materials in an open magnetic circuit

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Hardcopy - English - French
PDF - English - French
PDF 3 Users - English - French
PDF 5 Users - English - French
PDF 9 Users - English - French
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