HIGH PERFORMANCE IRON-BASED RARE EARTH PERMANENT MAGNET MATERIALS

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: N/A
Agency Tracking Number: 14862
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Awards Year: 1991
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
11722 Indian Ridge Road, Reston, VA, 22091
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr Frederick Rothwarf
 Principal Investigator
 (703) 620-1784
Business Contact
Phone: () -
Research Institution
N/A
Abstract
THIS PROPOSAL ADDRESSES THE PROBLEM OF SYNTHESIZING AND DEVELOPING NEW PERMANENT MAGNET MATERIALS FOR USE AT TEMPERATURES GREATER THAN 300 OC. THE RECENT SYNTHESIS OF A NEW COMPOUND, SM2FEI7N3-Y, WITH A STRONG UNIAXIAL ANISOTROPY, A LARGE SPONTANEOUS MAGNETIZATION, A POTENTIAL ENERGY PRODUCT, OF ABOUT 60 MGOE, AND A CURIE TEMPERATURE, TC, OF 476 OC SUGGESTS THE POSSIBILITY OF ACHIEVING COST--EFFECTIVE, HIGH PERFORMANCE MATERIALS NEEDED TO SATISFY THE REQUIREMENTS OF A VARIETY OF MILITARY AND COMMERCIAL DEVICES. SUBSTITUTION OF OTHER ELEMENTS FOR IRON CAN PRODUCE A T OVER 725 OC AND OFFERS THE OPPORTUNITY FOR PRODUCING MAGNETS FOR USE AT TEMPERATURES GREATER THAN 300 OC. SOME APPLICATIONS INCLUDE TRAVELING WAVE TUBES, MOTORS AND GENERATORS THAT MUST OPERATE AT ELEVATED TEMPERATURES. A BRIEF BACKGROUND DISCUSSION COMPARES THE NEW MATERIAL WITH OTHER RARE EARTH MATERIALS THAT HAVE BEEN DEVELOPED IN THE LAST TWO DECADES. A PROGRAM IS PROPOSED FOR USING PARTICULAR SUBSTITUENTS TO ENHANCE BOTH THE CURIE TEMPERATURES OF THESE NEW NITRIDED SMFE-BASED MATERIALS. EMPHASIS IS GIVEN TO DEVELOPING PROCESSING PROCEDURES FOR CONSOLIDATING THE MATERIALS INTO FULLY DENSE PERMANENT MAGNET STRUCTURES THAT WILL HAVE REMANANCES CORRESPONDING TO THEIR SATURATION MAGNETIZATIONS.

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

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