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Rapid Near Net Shape Processing of Transparent ALON Windows and Domes

Award Information

Agency:
Department of Defense
Branch:
Missile Defense Agency
Award ID:
41124
Program Year/Program:
1998 / SBIR
Agency Tracking Number:
41124
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Materials Modification Inc
2809-K Merrilee Drive Fairfax, VA -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1998
Title: Rapid Near Net Shape Processing of Transparent ALON Windows and Domes
Agency / Branch: DOD / MDA
Contract: N/A
Award Amount: $65,000.00
 

Abstract:

Infrared transparent domes for missiles require a multi-mode system of electromagnetic guidance. In recent-years efforts have been concentrated on maximizing the resolution of such detector materials and provide sensor guidance systems between the W. visible and the mid IR ranges. With a higher thermal shock resistance than any available optical material, sapphire is the material of choice, but displays optical anisotropy, which leads to significant scatter. Aluminum oxy-nitride based optical materials are its ideal replacement, since it has a cubic symmetry, which results in isotropic properties and displays ~>80% in line transmission in the visible and near infrared regions (0.3um - 5.0um). Unfortunately, AlON suffers from compositional inhomogeneity due to incomplete reactive sintering, and unstable mechanical properties resulting from catastrophic grain growth owing to high sintering times (20-100 hours). In this Phase I effort MMI proposes to synthesize gamnsa-AlON and consolidate near net shapes to full densities in less than 5 minutes. The consolidated part will further be polished to a roughness of

Principal Investigator:

M.s. Krupashankara
7035601371

Business Contact:


0
Small Business Information at Submission:

MATERIALS MODIFICATION, INC.
2929 Eskridge Road, P-1, Eskridge Center Fairfax, VA 22031

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