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SOLDERING TECHNIQUES ARE OFTEN USED TO AVOID DIFFICULTIES WHICH ARISE IN ACCURATELY CASTING LARGE-SPAN DENTAL BRIDGES.

Award Information
Agency: Department of Health and Human Services
Branch: N/A
Contract: N/A
Agency Tracking Number: 3141
Amount: $50,000.00
Phase: Phase I
Program: SBIR
Solicitation Topic Code: N/A
Solicitation Number: N/A
Timeline
Solicitation Year: N/A
Award Year: 1985
Award Start Date (Proposal Award Date): N/A
Award End Date (Contract End Date): N/A
Small Business Information
1850 N. Greenville Ave.140
Richardson, TX 75081
United States
DUNS: N/A
HUBZone Owned: No
Woman Owned: No
Socially and Economically Disadvantaged: No
Principal Investigator
 R. F. PINIZZOTTO
 PRINCIPAL INVESTIGATOR
 (214) 644-1271
Business Contact
Phone: () -
Research Institution
N/A
Abstract

SOLDERING TECHNIQUES ARE OFTEN USED TO AVOID DIFFICULTIES WHICH ARISE IN ACCURATELY CASTING LARGE-SPAN DENTAL BRIDGES. TO AVOID THIS PROBLEM, SUBUNITS ARE CAST AND ASSEMBLED BY SOLDERING. A DETAILED UNDERSTANDING OF THE ALLOY/SOLDER INTERFACE DOES NOT EXIST. THERE ARE CONFLICTING REPORTS ON ALLOY/SOLDER EPITAXY AND ON THE FORMATION OF INTERFACIAL PHASES. THIS STUDY WILL CORRELATE THE MECHANICAL PROPERTIES OF SEVERAL DENTAL ALLOY/SOLDER INTERFACES WITH THE MICROSTRUCTURES OBSERVED BY CROSS-SECTIONAL TRANSMISSION ELECTRON MICROSCOPY (XTEM). FIVE ALLOYS WITH VARYING AMOUNTS OF AU AND PD WILL BE JOINED USING SIMULATED PRECERAMIC AND POSTCERAMIC SOLDERING TECHNIQUES. THE ALLOY/SOLDER STRENGTH WILL BE MEASURED USING THREE-POINT FLEXURAL BENDING. THE MICROSTRUCTURE WILL BE EXAMINED USING XTEM. THE RESULTS OF THIS STUDY SHOULD PROVIDE A SOLID EXPERIMENTAL BASIS FOR THE NATURE OF THE ALLOY/SOLDER INTERFACE AND ENABLE MATERIALS SCIENTISTS TO TAILOR ALLOY/SOLDER COMBINATIONS TO OPTIMIZE THEIR IMPORTANT PARAMETERS. PHASE II OF THIS PROGRAM WILL APPLY THE PRINCIPLES LEARNED IN PHASE I TO THE DEVELOPMENT OF NEW ALLOY/SOLDER COMBINATIONS. IN ADDITION, THE TECHNIQUES DEVELOPED UNDER PHASE I WILL BE EXTENDED TO OTHER DENTAL

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

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