C - Chemistry – Metallurgy – 22 – C
Patent
C - Chemistry, Metallurgy
22
C
75/1.1
C22C 1/10 (2006.01) C22C 19/00 (2006.01) C22C 33/00 (2006.01) C22C 45/00 (2006.01) H01F 1/153 (2006.01)
Patent
CA 1200407
INVENTION: MAGNETIC DEVICES USING AMORPHOUS ALLOYS INVENTOR: GERALD R. BRETTS ABSTRACT OF THE DISCLOSURE Magnetic devices are disclosed which utilize amorphous metal alloys as cores. Compared with polycrystalline metal alloys, amorphous metal alloys evidence a lower coercive force, a higher permeability and a higher electrical resistivity. As a consequence of this combination of properties, together with the relative insensitivity of the amorphous structure to slight amounts of cold work, the amorphous metal alloys are useful as the magnetic cores of various forms of inductive devices where a low total core loss is a significant factor. The metal alloys have the formula (FE)70-85T0-15x15-25 where FE is at least one of the elements of iron, cobalt and nickel, T is at least one of the transition metal elements and X is at least one of the metalloid elements of aluminum, antimony, beryllium, boron, germanium carbon, indium; phosphorus, silicon and tin. Preferably, X is at least one of the elements of phosphorus, boron, carbon, silicon and aluminum. Used as cores of magnetic devices, these amorphous metal alloys evidence generally superior properties, as compared with well-known polycrystalline metal alloys utilized in the prior art.
240276
Allied Corporation
Gowling Lafleur Henderson Llp
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