The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 26, 1977
Filed:
Mar. 01, 1976
Robert Charles O'Handley, Morris Plains, NJ (US);
Ethan Allen Nesbitt, Beach Haven, NJ (US);
Lewis Isaac Mendelsohn, Morristown, NJ (US);
Allied Chemical Corporation, Morris Township, NJ (US);
Abstract
A new series of glassy metal alloys with near-zero magnetostriction is disclosed. The glassy alloys have the composition (Co.sub.x Fe.sub.1.sub.-x).sub.a B.sub.b C.sub.c, where x ranges from about 0.84 to 1.0, a ranges from about 78 to 85 atom percent, b ranges from about 10 to 22 atom percent and c ranges from 0 to 12 atom percent, with the proviso that the sum of b and c ranges from about 15 to 22 atom percent. The magnetostriction of these alloys ranges from about +5 .times. 10.sup.-.sup.6 to -5 .times. 10.sup.-.sup.6 and the saturation induction is at least about 10 kGauss. The transition metal content is responsible for the low magnetostriction in these alloys, as well as their high saturation induction. The metalloid content (needed to stabilize the glassy state which is one of low anisotropy) strongly affects the saturation induction and Curie temperature, but not the magnetostriction.