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:
Mar. 24, 2009
Filed:
Jul. 19, 2002
Toshio Miyoshi, Mishima-gun, JP;
Hirokazu Kanekiyo, Kyoto, JP;
Satoshi Hirosawa, Otsu, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A rare-earth alloy powder is obtained by rapidly cooling a melt of an alloy by an atomization process. The alloy has a composition represented by (FeT)QRTiM, where T is at least one of Co and Ni, Q is at least one of B and C, R is at least one of the rare-earth metal elements and yttrium, and M is at least one of Nb, Zr, Mo, Ta and Hf. The mole fractions x, y, z, m and n satisfy 10 at %<x≦25 at %, 6 at %≦y<10 at %, 0.1 at %≦z≦12 at %, 0≦m≦0.5, and 0 at %≦n≦10 at %, respectively. By adding Ti to the alloy, the nucleation and growth of α-Fe during the rapid quenching process can be minimized.