Report discloses technique to patch holes in nickel-alloy rocket-engine nozzle parts prior to vacuum brazing. Technique involves lightly spot-welding nickel foil 0.002 in. thick over hole patched, then spot-welding corrosion-resistant steel foil of same thickness over nickel foil. Once patches subject to pressure and temperature of vacuum brazing, nickel foil diffuses to bond with nickel-alloy nozzle, making vacuum-tight seal.
Foil Patches Seal Small Vacuum Leaks
NASA Tech Briefs ; 19 , 11
1995-11-01
Miscellaneous
No indication
English
Foil Patches Seal Small Vacuum Leaks
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