Title :
Temperature effects in Cu-Ni-Fe and Fe-Cr-Co magnets
Author :
Fulton, H.M. ; Bohlmann, M.A.
Author_Institution :
Magnet products, Electronic Memories &Magnetics Corp., Valparaiso, Indiana
fDate :
11/1/1979 12:00:00 AM
Abstract :
Permanent magnet alloys having reduced or nil cobalt content and which are mechanically workable are studied for temperature effects. Two Fe-Cr-Co alloys with minor additions and Cu-Ni-Fe were measured in the form of cylindrical magnets having various length/ diameter ratios. Temperature cycling in the range -50 +175°C revealed no material, or permanent, changes affecting the magnetic properties. Reversible and irreversible effects in Fe-Cr-Co show low values comparable to Alnico 5. Reversible coefficient in Cu-Ni-Fe varies 0.055 to 0.09 %/°C depending on the temperature range.
Keywords :
Magnetic thermal factors; Permanent magnet materials; Cobalt alloys; Iron; Length measurement; Magnetic materials; Magnetic properties; Permanent magnets; Production; Raw materials; Temperature distribution; Temperature measurement;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.1979.1060433
