Rare Earth Permanent Magnets Based on the Metastable SmCo13 Phase for XIPSs

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NAS3-02035
Agency Tracking Number: 012592
Amount: $69,348.00
Phase: Phase I
Program: SBIR
Awards Year: 2002
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
924 Links Avenue, Landisville, PA, 17538
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Wei Gong
 Senior Engineer
 (717) 898-2294
Business Contact
 ichael H. Walmer
Title: President
Phone: (717) 898-2294
Email: mhw@electronenergy.com
Research Institution
The objective of this effort is to develop high performance rare earth permanent magnets that can survive temperatures as high as 500?C for Xenon ion propulsion systems applications. Rare earth permanent magnets based on the SmCo13 phase were shown to possess good magnetic performance at temperatures as high as 500?C. We propose to initiate the development and commercialization of new rare earth permanent magnets of composition based on the 1:13 SmCo13 phase of the general form: (Sm(1-t-u-w)GdtEruHow)(Co(1-v-x-y)FevCuxZry)13. TASK 1 will investigate 1:13 magnet compositions using SEM-WDS to determine the exact composition of the (Sm,Er,Ho)TM13 phase previously observed. TASK 2 will prepare single-phased Sm(Co,Fe,Cu,Zr)13 alloys. TASK 3 will determine basic magnetic parameters of the 1:13 compounds such as magnetization, Curie temperature, magneto-crystalline anisotropy constant, magnetic anisotropy field, and the crystal structure. TASK 4 will perform preliminary investigations of high temperature coatings that eliminate or provide minimal thermal degradation for long-term high temperature exposure. Permanent magnets that maintain acceptable performance at high temperatures will permit higher thrust to weight ratios, and reduce the weight of cooling systems required to maintain magnet performance. This weight savings will translate into increased payload capability.

* Information listed above is at the time of submission. *

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