DIELECTROMAGNETS FROM MIXTURE OF HARD MAGNETIC POWDERS FOR SMALL ELECTRICAL MOTORS

  • Published : 1995.10.01

Abstract

Dielectromagnets are permanent magnets made from resin-bonded hard magnetic powders. Magnetic properties of dielectromagnets depend on kind of used hard magnetic materials as chemical compound, shape, size of grain and applied technology. Comparison of advantages and disadvantages of dielectromagnets made from different kind of magnetic powders induced us to try to prepare dielectromagnets from mixture of hard magnetic powders, not only one of them. The purpose of investigation on this kind of dielectromagnets is to find formula to prepare permanent magnets with properties adequate to different kind of electrical motors requirements. As hard magnetic materials we used powders of ferrite, melt-spun ribbon Nd-Fe-B and Alnico. Papers present results of investigation on technology of this kind of dielectromagnets. It shows also influence of kind of mixture and used technology on magnetic properties of dielectromagnets.

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References

  1. International Conference and Exhibition PCIM'95 Influence of temperature on characteristics of dielectromagnets prepared from hard magnetic powders A.Kordecki;B.Slusarek
  2. Ⅸ Sympozjum Mikromaszyny i Serwonapedy, Krakow An idea of dielectromagnets for electrical micromachines A.Kordecki;B.Slusarek
  3. Powder Metallurgy World Congress Bonded Magnets for stepping motors B.Slusarek;A.Wasenczuk;L.Dlugiewicz