Nanoparticle Synthesis and Coating for Exchange Coupled Permanent Magnets

Award Information
Agency: Department of Defense
Branch: Air Force
Contract: FA8650-06-M-2632
Agency Tracking Number: F061-175-3869
Amount: $100,000.00
Phase: Phase I
Program: SBIR
Awards Year: 2006
Solicitation Year: 2006
Solicitation Topic Code: AF06-175
Solicitation Number: 2006.1
Small Business Information
NGIMAT CO.
5315 Peachtree Industrial Blvd., Atlanta, GA, 30341
DUNS: 806337762
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Michael Sigman
 Senior Engineer
 (678) 287-3959
 msigman@ngimat.com
Business Contact
 Dave Smith
Title: CFO
Phone: (678) 287-2451
Email: dsmith@ngimat.com
Research Institution
N/A
Abstract
The formation of exchange coupled permanent magnets consisting of nanometer sized hard magnetic grains enveloped in a soft magnetic matrix has been demonstrated experimentally to increase the energy product of advanced magnetic materials. Additional gains are still predicted, but improved control of the nanostructure must be achieved through a route that is both performance and cost effective. nGimat Co. proposes to utilize their proprietary NanoSpraySM and CCVC processing techniques to produce nanopowders suitable for sintering into dense, nanostructured exchange coupled magnets. Initially, both hard magnetic and soft magnetic nanopowders will be demonstrated individually. The two powders will then be blended as a liquid dispersion or in dry powder form via ball milling for subsequent pressing and sintering into consolidated pellets. Following successful production of the individual powders, core-shell nanopowders will be developed consisting of a hard magnetic core coated with a soft magnetic phase using a dynamic heterogeneous nucleation deposition technique. Core-shell nanocrystals are expected to improve dispersion and contact between the two phases following sintering. Successful completion of Phase I objectives will lead to a Phase II effort to complete the development and commercialization of the proposed nanomaterials for annealing/sintering into high energy density exchange coupled permanent magnets.

* information listed above is at the time of submission.

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