Advanced Processing of the Optical Surface on Large Lightweight Mirrors

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: F2960103M0268
Agency Tracking Number: 031-0117
Amount: $69,964.00
Phase: Phase I
Program: SBIR
Awards Year: 2003
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
4401 Dayton-Xenia Road, Dayton, OH, 45432
DUNS: 074689217
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Tai-Il Mah
 Research Scientist
 (937) 255-9829
Business Contact
 Francis Williams, Jr.
Title: Contracts Manager
Phone: (937) 426-6900
Research Institution
The primary goal of the Phase I work is to explore two processing routes to produce mirror systems based on the replication technique using master mandrel. One processing route is based on the deposition of nano-laminates of ceramics to provide optical aswell as mechanical integrity of the mirror. The other processing involves the construction of mirror system (both mirror and substructure) based on a unique ceramic composite uni-body fabrication technique. These two processing routes involve thereplication technique, which is capable of providing fast and low-cost production of the high optical surface finish of the large mirrors. The ceramic nano-laminate mirror deposition will be followed various deposition techniques (Large Area Filtered ArcDeposition/Magnetron Sputtering/EB-PVD ). The composite bonding (between mirror and substructure) materials will be developed utilizing negative CTE nano-powder and geopolymer. The negative CTE nano-powder will be utilized to process ceramic compositeuni-body using chemically driven densification (CDD) processing. Successful completion of Phase II will provide a solid technical foundation for fabricating a primary mirror at least one-meter in diameter. It will also provide a list of limitations anddifficulties in scaling up to a 3 to 4 meter mirror segment with desired quality/performance. However, the Phase II research will demonstrate the optimum design/methodology for the rapid manufacturing of lightweight, low cost primary imaging and beamconverging mirrors, which have a variety of DoD and commercial applications. A successful manufacturing technology for producing large quantities of negative CTE single-phase, nano-sized powder will allow for its use in a variety of applications fromstructural and electronic, to space materials. Using the composite concept of negative CTE powder with conventional materials will give tremendous opportunities for thermal management of these materials for various applications. The processes to bedeveloped further under this program, geopolymerization and CDD, have much potential to be explored in the field of structural ceramics.

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

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