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Innovative Passivation Technologies for Aluminum Nanoparticles

Award Information

Agency:
Department of Defense
Branch:
Army
Award ID:
Program Year/Program:
2012 / SBIR
Agency Tracking Number:
A112-089-0019
Solicitation Year:
2011
Solicitation Topic Code:
A11-089
Solicitation Number:
2011.2
Small Business Information
UES, Inc.
4401 Dayton-Xenia Road Dayton, OH 45432-1894
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Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2012
Title: Innovative Passivation Technologies for Aluminum Nanoparticles
Agency / Branch: DOD / ARMY
Contract: W15QKN-12-C-0014
Award Amount: $149,994.00
 

Abstract:

Aluminum (Al) has an energy density (-31.05 kJ/g) nearly three times higher than most molecular high explosives and its combustion yields an exothermic release of energy ("'Hf (Al2O3) = -1676.8 kJ/mol) but is limited by surface diffusion, therefore an increase in surface area yields a direct increase on the reaction rate. Aluminum nanopowders (nano-Al) possess surface areas on the order of 20-40 m2/g and have attracted interest throughout the energetics community for propellant and metallization applications. Unpassivated nano-Al powders are highly pyrophoric and require stabilization through formation of a nascent oxide layer (2-6 nm), however, this process accounts for a 14-38% loss of reactive aluminum. To optimize the reactive Al content in nano-Al powders, UES proposes the use of silicon, deposited through a modified chemical vapor deposition process, as an innovative passivation strategy for stabilizing nano-Al. Silicon has an energy density (-32.42 kJ/g) essentially equivalent to Al and also expresses high reactivity on the nano-scale, although passivation of silicon is achieved through a 34% less dense, 1-2 nm nascent oxide, or the use of organic coatings. Therefore, passivation of nano-Al through deposition of silicon has the potential to eliminate undesirable Sdead weight and replace it with additional reactive fuel.

Principal Investigator:

Christopher Crouse
Principal Investigator
(937) 255-9368
ccrouse@ues.com

Business Contact:

Rick Weddle
Director
(937) 426-6900
rweddle@ues.com
Small Business Information at Submission:

UES, Inc.
4401 Dayton-Xenia Road Dayton, OH -

EIN/Tax ID: 310797776
DUNS: N/A
Number of Employees:
Woman-Owned: Yes
Minority-Owned: No
HUBZone-Owned: No