BRAZING AND NON-DESTRUCTIVE TESTING OF THROAT-TO-COPPER BRAZE JOINT SNAP- 10A PUMPS
Technical Report
·
OSTI ID:4030758
Brazing alloys and processes were evaluated for bonding 347 stainless steel to OFHC copper. Among the alloys and processes examined, the gold-- copper- - nickel brazes (Nicoro 80 and Premabraze 409), when brazed in vacuum appear to be the most suitable for use in the throat-tocopper braze joint. Metallographic and microprobe studies of Au--Ni-- Cu braze joints that were held in vacuum at 1200 deg F for periods up to 2000 hours corroborate the conclusion. Shear strength tests of the gold base braze specimens show that the joint is structurally stable after exposure tests. A non-destructive testing technique employing ultrasonics was also developed. This technique can be successfully used for the determination of the amount of sound, bonded area in the throat-to- copper braze joint. (auth)
- Research Organization:
- Atomics International. Div. of North American Aviation, Inc., Canoga Park, Calif.
- DOE Contract Number:
- AT(11-1)-GEN-8
- NSA Number:
- NSA-18-018332
- OSTI ID:
- 4030758
- Report Number(s):
- NAA-SR-Memo-9435
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BONDING
BRAZING
COPPER
COPPER ALLOYS
GOLD ALLOYS
HIGH TEMPERATURE
JOINTS
MATERIALS TESTING
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
NICKEL ALLOYS
QUANTITATIVE ANALYSIS
SHEAR
SOUND
STAINLESS STEELS
TENSILE PROPERTIES
ULTRASONICS
VACUUM
BRAZING
COPPER
COPPER ALLOYS
GOLD ALLOYS
HIGH TEMPERATURE
JOINTS
MATERIALS TESTING
METALLOGRAPHY
METALS, CERAMICS, AND OTHER MATERIALS
NESDPS Office of Nuclear Energy Space and Defense Power Systems
NICKEL ALLOYS
QUANTITATIVE ANALYSIS
SHEAR
SOUND
STAINLESS STEELS
TENSILE PROPERTIES
ULTRASONICS
VACUUM