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:
Apr. 04, 2000
Filed:
Aug. 11, 1993
Applicant:
Inventors:
Kurt H Buschow, Eindhoven, NL;
Franciscus H Feijen, Eindhoven, NL;
Dirk B De Mooij, Eindhoven, NL;
Arjan Noordermeer, Eindhoven, NL;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22F / ;
U.S. Cl.
CPC ...
419 23 ; 419 38 ; 419 32 ; 419 57 ;
Abstract
A description is given of a method of manufacturing a permanent magnet on the basis of NdFeB. In this method a powder of NdFeB and a powder of a Ga alloy, consisting mainly of Ga and one or more than one rare earth metals (RE), is mixed to form a mixture which is subsequently aligned, compressed and sintered. Such alloys can be ground into homogeneous, fine-grain powders in a simple manner. The composition of the alloy preferably corresponds to the formula REGa.sub.x, where x=1 or x=2. Alloys which are very suitable contain Dy and/or Tb as the rare earth metal.