H - Electricity – 01 – F
Patent
H - Electricity
01
F
148/9, 75/1.1, 3
H01F 1/14 (2006.01) C22C 45/04 (2006.01) H01F 1/153 (2006.01) H05K 9/00 (2006.01)
Patent
CA 1056180
Abstract of the Disclosure The disclosed magnetic devices, including a magnetically coupled conducting path, incorporate amorphous, low magnetostriction alloys of the general formula (CoaFebTc)iXj, the "metallic" constituents thereof being within the parenthetical expression. T, in the formulation, is selected from among Ni, Cr, Mn, V, Ti, Mo, W, Nb, Zr, Pd, Pt, Cu, Ag and Au, X being at least one "glass former" selected from among P, Si, B, C, As, Ce, Al, Ga, In, Sb, Bi and Sn. The metallic constituents comprise from 70-90 atomic percent of the alloy with cobalt being present in an amount of at least 70 atomic percent of the "metallic" constituents. The described material is prepared by rapid cooling from the liquid directly to the shape needed for fabrication of the device (e.g., tape to be wound to form an inductor core). When the amorphous material is fabricated to its finished geometry, raised to a temperature somewhat below its crystallization temperature and quenched in a high heat of vaporization liquid (e.g., water), the permeability is greatly improved. An exemplary alloy was shown to possess properties, in some respects, equivalent to those of Supermalloy (Trade Mark), an alloy of much more complex manufacture.
278009
Chen Ho S.
Gyorgy Ernst M.
Leamy Harry J.
Sherwood Richard C.
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