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Low Cost Production of Transparent Spinel Domes Using Freeze Casting

Award Information

Department of Defense
Award ID:
Program Year/Program:
2010 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 2
Fiscal Year: 2010
Title: Low Cost Production of Transparent Spinel Domes Using Freeze Casting
Agency: DOD
Contract: W31P4Q-10-C-0120
Award Amount: $729,999.00


This Phase II SBIR ARMY project proposes the development/optimization and preliminary scale up of 7 in diameter hemispherical spinel domes (3.5 radius, 0.18 wall thickness, 160 degree aperture) through the combination of freeze casting (FC) technology with unique nanopowder coating technology commercialized by MER (NC-Spinel) for magnesium aluminate spinel (MgAl2O4) ceramics. These technologies allow for the production of spinel domes with high green density, green near net shape, no residual stress, that result in 99.99% Th.D. for the sintered domes minimizing the distortion and residual stresses on the sintered dome. The novel process requires less secondary machining after sintering to produce high quality transparent domes at a lower cost when compared to cold isostatic pressing (CIP) technology. MER successfully demonstrated this technology during Phase I.

Principal Investigator:

Juan Sepulveda
Vice-Pres. Technical Mark
(520) 574-1980

Business Contact:

James Withers
(520) 574-1980
Small Business Information at Submission:

Materials & Electrochemical Research (ME
7960 S. Kolb Rd. Tucson, AZ -

EIN/Tax ID: 860530946
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No