SAPPHIRE-METAL JOINING FOR LOW-LOSS GYROTRON WINDOWS

Award Information
Agency: Department of Energy
Branch: N/A
Contract: N/A
Agency Tracking Number: 27264
Amount: $74,983.00
Phase: Phase I
Program: SBIR
Awards Year: 1994
Solicitation Year: N/A
Solicitation Topic Code: N/A
Solicitation Number: N/A
Small Business Information
Fm Technologies Inc.
10529-b Braddock Rd, Fairfax, VA, 22032
DUNS: N/A
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Dr Richard Silberglitt
 (703) 425-5111
Business Contact
Phone: () -
Research Institution
N/A
Abstract
A NEW TECHNIQUE, PULSED ELECTRON BEAM (PEB) JOINING, WILL BE APPLIED TO THE PROBLEM OF JOINING, LOW-LOSS CERAMIC MATERIALS USED FOR WINDOWS IN HIGH FREQUENCY MICROWAVE DEVICES TO THE METAL VACUUM ENVELOPE OF THE MICROWAVE DEVICE. THE PEB TECHNIQUE ALLOWS SELECTIVE HEATING OF THE SPECIMEN TO BE JOINED THROUGH PREFERENTIAL ENERGY DEPOSITION THAT IS CONTROLLED BY A COMBINATION OF THE ELECTRON BEAM PARAMETERS AND THE PROPERTIES OF THE SPECIMEN. TEST SPECIMENS TO BE JOINED IN PHASE I WILL CONSIST OF SAPPHIRE PLATES AND THIN COPPER SHEETS. THE MICROSTRUCTURE OF THE TEST SPECIMENS WILL BE EXAMINED USING SCANNING ELECTRON MICROSCOPY, AND COMPARISONS WILL BE MADE WITH EXPECTATIONS BASES UPON MONTE CARLO COMPUTER SIMULATIONS OF THE PEB ENERGY DEPOSITION PROFILE. THE MECHANICAL STRENGTH OF THE TEST SPECIMENS WILL THEN BE EVALUATED USING MICROINDENTATION TECHNIQUES. BASED UPON THESE DATA, JOINING PARAMENTERS WILL BE IDENTIFIED FOR PHASE II TEST SPECIMENS THAT WILL ALLOW DETERMINATION OF THE PROPERTIES OF PEB-PRODUCED JOINTS UNDER CONDITIONS THAT SIMULATE WINDOW DESIGNS FOR GYROTRON OSCILLATORS.

* information listed above is at the time of submission.

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government