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LASER BRAZING PROCESS DEVELOPMENT FOR CERAMIC-TO-METAL JOINING OF RADOME…

Award Information

Agency:
Department of Defense
Branch:
Navy
Award ID:
12210
Program Year/Program:
1990 / SBIR
Agency Tracking Number:
12210
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
American Research Corporation of Virginia
1509 Fourth Street P.O. Box 3406 Radford, VA 24143 0340
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Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 1990
Title: LASER BRAZING PROCESS DEVELOPMENT FOR CERAMIC-TO-METAL JOINING OF RADOME COMPONENTS
Agency / Branch: DOD / NAVY
Contract: N/A
Award Amount: $50,000.00
 

Abstract:

THERE IS A NEED FOR UNIQUE JOING/BONDING PROCESSES THAT CAN DIRECTLY JOIN CERAMIC IR AND RF DOME COMPONENTS TO CYLINDRICAL METAL SURFACES. EXPOSURE TO THE HIGH TEMPERATURES ASSOCIATED WITH CONVENTIONAL BRAZING PROCESSES CAN DEGRADE THE OPTICAL PROPERTIES OF MATERIALS AND PROMOTE CHEMICAL REACTION BETWEEN THE BRAZE MATERIAL AND THE CERAMIC THROUGHOUT THE ENTIRE HEAT AFFECTED ZONE (HAZ). THEREFORE, IT IS DESIRABLE TO UTILIZE A HIGHLY LOCALIZED HEAT SOURCE FOR THE JOINING EFFORT. THIS PROPOSAL SUGGESTS LASER BRAZING AS A MEANS OF PROVIDING THE HEAT NECESSARY TO FORM A METALLURGICAL BOND WHILE LIMITING THE THERMAL DEGRADATION TO REGIONS ADJACENT TO THE JOINT. INNOVATIVE GLASS CERAMIC MATERIALS HAVING MATCHED COEFFICIENTS OF THERMAL EXPANSION WILL BE USED AS BRAZE FILLER. THE PHASE I TECHNICAL OBJECTIVE INCLUDE EVALUATION OF CANDIDATE BRAZING MATERIALS, DESIGN OF A LASER PROCESSING CHAMBER, SELECTION OF LASER PROCESSING PARAMETERS, ACQUISITION OF FAMILIES OF TEST DATA AND OPTIMIZATION OF A PROOF-OF-CONCEPT SYSTEM FOR ENGINEERING DEVELOPMENT IN PHASE II OF THE PROGRAM. SUCCESSFUL COMPLETION OF THE PROGRAM OBJECTIVES WOULD RESULT IN A TECHNIQUE FOR PRODUCING HERMETICALLY SEALED CERAMIC-TO-METAL JOINTS HAVING GOOD THERMALMECHANICAL PROPERTIES AND MINIMAL HAZ.

Principal Investigator:

Dr R J Churchill
7037310655

Business Contact:

Small Business Information at Submission:

American Research Corp Of Va
Po Box 3406 Radford, VA 24143

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