J. Phys. Colloques
Volume 41, Numéro C8, Août 1980Fourth International Conference on Liquid and Amorphous Metals
|Page(s)||C8-820 - C8-826|
J. Phys. Colloques 41 (1980) C8-820-C8-826
APPLICATIONS OF MAGNETIC AMORPHOUS ALLOYSF.E. Luborsky et L.A. Johnson
General Electric Corporate Research & Development, P.O. Box 8, Schenectady, NY 12301, U.S.A.
Device applications are divided into two general categories ; power devices such as distribution transformers and electronic devices such as miniature transformers and sensing elements. In the case of power devices the recent thrust has been towards developing alloys with maximum Ms at minimum cost since losses are not a problem. Losses are now at least three to ten times lower than for the best Fe-Si alloys with a similar decrease in exciting power. The status, and possible future, of these material developments are summarized. In the case of electronic size devices the results reported in the literature are reviewed. These include the use of amorphous alloys in such devices as multivibrators, electronically controlled delay lines and surface acoustic wave devices, filter elements, electronic current transformers, magnetic shielding material, recording heads, leakage current alarms, d.c. current transformers and in switched mode power supplies.