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Low-Cost IR Windows and Lenses made from Polycrystalline YAG

Award Information

Department of Defense
Air Force
Award ID:
Program Year/Program:
2007 / SBIR
Agency Tracking Number:
Solicitation Year:
Solicitation Topic Code:
Solicitation Number:
Small Business Information
Materials & Systems Research, Inc.
5395 West 700 South  Salt Lake City , UT -
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
Phase 1
Fiscal Year: 2007
Title: Low-Cost IR Windows and Lenses made from Polycrystalline YAG
Agency / Branch: DOD / USAF
Contract: FA8650-07-M-5409
Award Amount: $99,713.00


This Small Business Innovation Research (SBIR) Phase I proposal from Materials and Systems Research, Inc. (MSRI) and University of Utah (subcontractor) seeks to fabricate single-phase, polycrystalline yttrium aluminum garnet (YAG) with a density greater than 99.95% and a mean grain size less than 1 micron. Polycrystalline YAG with these properties will have optical transmittance comparable to that of single crystal YAG in the midwave (3-5 micron) and long wave (8-14 micron) infrared windows. The high density and small grain size will be achieved by a fabrication route that will combine the following steps: preparation of a stable suspension of submicron YAG powder, forming a green compact by colloidal isopressing, and a two-stage densification by pressureless sintering followed by hot-isostatic pressing. The proposed fabrication route has two distinct advantages over conventional powder processing methods: (a) it eliminates microstructural inhomogenities that limit strength, durability and optical transmittance in conventional powder processing, (b) it eliminates a number of steps involved in conventional processing and leads to a lower cost. Research in Phase I will fabricate disks 100-150 mm in diameter and 3-6 mm in thickness. Measurements of fracture strengths, fracture toughness, and optical transmittance will be done by University of Utah under a subcontract.

Principal Investigator:

Feng Zhao
Research Scientist

Business Contact:

Anthony Decheek
Contract Administrator
Small Business Information at Submission:

5395 West 700 South Salt Lake City, UT 84104

EIN/Tax ID: 870479591
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No