Invention Grant
- Patent Title: Method of making Nd—Fe—B magnetic materials with reduced heavy rare earth metals
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Application No.: US14471815Application Date: 2014-08-28
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Publication No.: US10022796B2Publication Date: 2018-07-17
- Inventor: Yucong Wang
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Agency: Reising Ethington P.C.
- Main IPC: H01F41/02
- IPC: H01F41/02 ; B22F3/15 ; H01F1/057 ; B22F1/02 ; B22F3/105 ; B22F3/24

Abstract:
A method of making a magnetic material includes a step of providing a first material in the form of a core powder containing Nd, Fe and B. The first material is combined with the second material to form a powder combination. The second material includes a component selected from the group consisting of Dy, Tb, and combinations thereof. The powder combination is encapsulated to form an encapsulated powder combination. A magnetic field is applied to the powder combination during encapsulation and thereafter to align the magnetic dipoles therein. The encapsulated powder combination is isostatically pressed with heat to form the magnetic material.
Public/Granted literature
- US20160064144A1 Method of Making Nd-Fe-B Magnetic Materials with Reduced Heavy Rare Earth Metals Public/Granted day:2016-03-03
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