H - Electricity – 01 – F
Patent
H - Electricity
01
F
148/9
H01F 1/04 (2006.01) H01F 1/08 (2006.01)
Patent
CA 1136023
JIN-3 19. MAGNETICALLY ANISOTROPIC ALLOYS BY DEFORMATION PROCESSING Abstract of the Disclosure This invention relates to magnetic alloys having an anisotropic magnetic structure produced by thermo-mechanical treatment in the absence of a maganetic field. The treatment calls for developing magnetic particles in an alloy by cooling such alloy in a controlled fashion from a first temperature at which the alloy is in a predominantly single phase state to a second temperature at which the alloy is in a multi-phase state and deforming the alloy to result in cross-sectional area reduction of at least 30 percent (corresponding to elongation of magnetic particles by a factor of at least 1.7). Disclosed treatment leads to desirable magnetic properties, e.g., in Cu-Ni-Fe, Cu-Ni-Co, Fe-Al-Ni, Fe-Al-Ni-Co and Fe-Cr-Co alloys. For example, in the case of Fe-Cr-Co, alloy properties such as remanence-to-saturation squareness ratio in excess of 0.90 and maximum energy product in the range of 0.6-8.0 MGOe are achieved. Disclosed magnetic alloys are suitable for use in the manufacture of telephone ringers, relays, and electromagnetic transducers.
346438
Kirby Eades Gale Baker
Western Electric Company Incorporated
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