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Nanostructured High-Strength Permanent Magnets

詳細技術說明

University researchers are developing nanocomposite high-strength permanent magnets and methods to fabricate said magnets. The invention provides various configurations of hard magnet and soft magnet nano regions that enhance the exchange-coupling between these regions, thus leading to greater magnetic strength. In this way next-generation permanent magnets can be produced in bulk at lower cost and reduced risk compared to current permanent magnets that depend on scarce and globally critical rare-earth minerals. Such new nanostructured high-strength permanent magnets can find applications in the growing hybrid/electric vehicle and wind turbine generator industries.

*Abstract

The unique magnetic, optical, and chemical properties of the lanthanide elements or rare earths have made them important in clean energy applications. Global competition for these materials and their limited availability from a single source present a critical risk to domestic clean energy technology development. As such, it has become crucial to develop alternatives that reduce dependency on rare earths, e.g., permanent magnets for motors that have low or zero rare earth content. One approach to developing new permanent magnet materials relies on magnetically hard and soft phases that interact by magnetic exchange coupling: these have a large energy product, due to the combination of large permanent magnet field and magnetization, compared to traditional, single-phase materials. However, nanometer-scale control of both the hard and soft phases to ensure efficient exchange coupling remains a significant challenge.

*IP Issue Date

May 15, 2014

*Principal Investigation

Name: Sungho Jin

Department:

附加資料

Patent Number: US20140132376A1
Application Number: US14118206A
Inventor: Jin, Sungho
Priority Date: 18 May 2011
Priority Number: US20140132376A1
Application Date: 29 Jan 2014
Publication Date: 15 May 2014
IPC Current: H01F000101 | H01F004102
US Class: 335302 | 075346 | 2041921 | 205220 | 264109 | 264427 | 419064
Assignee Applicant: The Regents of the University of California
Title: NANOSTRUCTURED HIGH-STRENGTH PERMANENT MAGNETS
Usefulness: NANOSTRUCTURED HIGH-STRENGTH PERMANENT MAGNETS
Summary: Magnet is used for electric motor and electric power generator (claimed).
Novelty: Method of fabricating magnet for electric motor, involves distributing magnetic material particles such that particles are separated, and forming coating of another magnetic material on each of particles, such that coating forms interface

主要類別

汽車

細分類別

發動機/電機

申請號碼

20140132376

其他

State Of Development

The technology has a patent pending and is available for sponsorship and/or licensing.

Tech ID/UC Case

22391/2011-337-0

Related Cases

2011-337-0

國家/地區

美國