IEC TR 62518:2009
Current
The latest, up-to-date edition.
Rare earth sintered magnets - Stability of the magnetic properties at elevated temperatures
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English
03-17-2009
FOREWORD
INTRODUCTION
1 Scope
2 Normative references
3 Terms and definitions
4 Classification of magnetic flux loss due to temperature
4.1 Reversible flux loss
4.2 Irreversible flux loss
4.3 Permanent flux loss
5 Long term ageing of rare earth magnets
6 Experimental
7 Temperature stability
7.1 Flux change due to temperature
7.2 Effect of temperature on B[r] and H[cJ]
(demagnetization curves at different
temperatures)
7.3 The time effects at constant temperature
(influence of temperature exposure
and L/D)
7.4 The influence of H[cJ] on the irreversible flux loss for
Sm[2]Co[17] magnets
7.5 The influence of H[cJ] on the irreversible flux loss for
Nd-Fe-B magnets
7.6 Irreversible flux loss per decade
7.7 Permanent flux loss
8 Summary
Annex A (informative) Summary of temperature stability
graphs
Annex B (informative) Non-linearity of temperature
dependence of B[r] and H[cJ]
Bibliography
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