Permanent magnets with extremely high energy product for electromechanical devices

Award Information
Agency: Department of Defense
Branch: Army
Contract: N/A
Agency Tracking Number: 26321
Amount: $541,810.00
Phase: Phase II
Program: SBIR
Awards Year: 1995
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Advanced Materials Corp
100 N. Bellefield Ave., Suite, 8, Pittsburgh, PA, 15213
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 S. Simizu
 (412) 268-5650
Business Contact
Phone: () -
Research Institution
N/A
Abstract
The theoretical maximum energy product of intermetallic compounds Nd2Fe14B and Pr2Fe14B is as high as 64 M Oe at room temperature. However, the actual energy product achieved in the laboratory is ~50 M Oe and the best commercial magnets exhibit only ~45 MG Oe. The inability to fabricate magnets with energy products close to 64 MG Oe is caused in part by 1) an imperfect grain alignment and 2) the presence of a large amount of non-magnetic secondary phases. We have conceived a novel processing technique that would dramaticlaly reduce the amount of secondary phases and at the same time improve the grain alignment. We propose to build a magnet fabrication facility that would enable us to realize magnets with energy products close to the theoretical limit. The proposed method reduces the number of steps in production and it is therefore expected that the overall production costs would remain competitive despite the need for stringent process control. We also propose to design and construct a few prototype electromechanical devices using the high energy magnets.

* information listed above is at the time of submission.

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