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:
Nov. 06, 1984
Filed:
Apr. 11, 1983
Kiyoshi Watanabe, Sendai, JP;
Abstract
The disclosed permanent magnet consists of an iron-palladium alloy consisting of 25 to 40 atomic % of palladium, and the remainder of iron with less than 0.5 atomic % of impurities or an iron-palladium-silver alloy consisting of 19.5 atomic % of palladium, 0.1 to 27.5 atomic % of silver and the remainder of iron with less than 0.5 atomic % of impurities and having a crystalline structure with fine dispersion of .alpha.+.gamma..sub.1 phase in a matrix, so that the permanent magnet has a coercive force of higher than 500 Oe, a residual magnetic flux density of larger than 6 kG, and a maximum energy product of larger than 2 MG.Oe. The disclosed method of producing the aforementioned permanent magnet comprises steps of homogenizing solid solution treatment at a temperature depending on the specific alloy composition, cooling, and tempering at a suitable temperature so as to generate the aforementioned crystalline structure.