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:
May. 15, 2007
Filed:
Aug. 18, 2003
Takeshi Nishiuchi, Ibaraki, JP;
Hirokazu Kanekiyo, Kyoto, JP;
Satoshi Hirosawa, Otsu, JP;
Toshio Miyoshi, Osaka, JP;
Takeshi Nishiuchi, Ibaraki, JP;
Hirokazu Kanekiyo, Kyoto, JP;
Satoshi Hirosawa, Otsu, JP;
Toshio Miyoshi, Osaka, JP;
Neomax Co., Ltd., Osaka, JP;
Abstract
A compound for a rare-earth bonded magnet includes a rare-earth alloy powder and a binder. The rare-earth alloy powder includes at least about 2 mass % of Ti-containing nanocomposite magnet powder particles with a composition represented by (FeT)QRM, where T is Co and/or Ni; Q is B with or without C; R is at least one rare-earth element substantially excluding La and Ce; M is at least one metal element selected from Ti, Zr and Hf and always includes Ti; and 10<x≦20 at %; 6≦y<10 at %; 0.1≦z≦12 at %; and 0≦m≦0.5. The particles include at least two ferromagnetic crystalline phases, in which hard magnetic phases have an average crystal grain size of about 10 nm to about 200 nm, soft magnetic phases have an average crystal grain size of about 1 nm to about 100 nm; and the average crystal grain size of the soft magnetic phases is smaller than that of the hard magnetic phases.