Ceramic-to-metal sealing. Final report

Technical Report · Tue Mar 01 00:00:00 EST 1977

DOI:https://doi.org/10.2172/7310843· OSTI ID:7310843

Gates, W G

Ceramic-to-metal sealing was accomplished by brazing a metallized alumina insulator to a Kovar (Carpenter Technology Corporation) pin and header. A braze alloy wetting evaluation and a braze joint tensile strength evaluation were completed by brazing the specimens in a hydrogen atmosphere. From these evaluations the best braze alloy and brazing cycle were selected. Twelve braze alloys were evaluated and Nicusil 3 (Western Gold and Platinum Company) braze alloy was found to have good wetting characteristics and optimum strength. Assemblies brazed with this alloy were vacuum leak tight and metallurgically sound.

• Research Organization: Bendix Corp., Kansas City, MO (United States)
• DOE Contract Number: EY-76-C-04-0613
• OSTI ID: 7310843
• Report Number(s): BDX-613-1683(Rev.)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
42 ENGINEERING
ALUMINIUM OXIDES
BRAZING
BRAZED JOINTS
FABRICATION
LEAK TESTING
MECHANICAL PROPERTIES
BRAZING ALLOYS
PERFORMANCE TESTING
CERAMICS
METALS
COBALT ALLOYS
IRON ALLOYS
MATERIALS TESTING
METALLURGY
NICKEL ALLOYS
TENSILE PROPERTIES
ALLOYS
ALUMINIUM COMPOUNDS
CHALCOGENIDES
ELEMENTS
JOINING
JOINTS
OXIDES
OXYGEN COMPOUNDS
TESTING
WELDED JOINTS
WELDING
360101* - Metals & Alloys- Preparation & Fabrication
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication
420500 - Engineering- Materials Testing