Research and development for fabricating a beryllium and beryllium-titanium composite panel, volume 2 Final report
Fabrication of beryllium panel and composite beryllium-titanium panel by electron beam and resistance brazing
Source record↗
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Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Nondestructive testing of welds on thin-walled tubing
Special ultrasonic search unit, or transducer assembly, reliably inspects the quality of melt-through welds of fusion welded tubing couplers for hydraulic lines. This instrumentation can also be used to detect faulty braze bonds in thin-walled, small diameter joints and wall thickness of thin-walled metal tubing.
Hagemaier, D. J.↗
Generation of sonic power during welding
Generation of intense sonic and ultrasonic power in the weld zone, close to the puddle, reduces the porosity and refinement of the grain. The ac induction brazing power supply is modified with long cables for deliberate addition of resistance to that circuit. The concept is extensible to the molding of metals and plastics.
Mc Campbell, W. M.↗
Improved nickel plating of Inconel X-750
Electroplating technique with acid pickling provides a method of applying nickel plating on Inconel X-750 tubing to serve as a wetting agent during brazing. Low-stress nickel-plating bath contains no organic wetting agents that cause the nickel to blister at high temperatures.
Farmer, M. E.↗
Pretreatment method for anti-wettable materials
Anti-wettable materials brazing processes using titanium and zirconium for surface pretreatment
Adams, C. M., Jr.↗
Lead telluride bonding and segmentation study Semiannual phase report, 1 Aug. 1969 - 31 Jan. 1970
Metallurgical studies of eutectic alloys suitable for brazing MoSi2 to Si-Ge thermoelectric material
Mermelstein, S.↗
Joining techniques for fabrication of composite air-cooled turbine blades and vanes
Activated diffusion brazing studies of joining methods for composite air-cooled turbine blade and vane fabrication
Berry, T. F.↗
Development of fabrication techniques and performance tests of hydrogen-cooled structural panels
Brazed plate-fin superalloy panels suitable for hydrogen-cooled structures, discussing fabrication techniques, performance tests and pressure containment and fatigue characteristics
Gellersen, E. W.↗
Concentric tubes cold-bonded by drawing and internal expansion
Metal tubes bonded together without heat application or brazing materials retain strength at elevated temperatures, and when subjected to constant or cyclic temperature gradients. Combination drawing and expansion process produces residual tangential tensile stress in the outer tube and tangential compressive stress in the inner tube.
Hymes, L. C.↗
Fabrication and structural evaluation for regeneratively cooled panels
Fabrication and structural evaluation for regeneratively cooled panels - tensile tests, creep rupture, and flexure tests of brazed plate-fin specimens
Demogenes, C.↗
Method of joining aluminum to stainless steel Patent
Joining aluminum to stainless steel by bonding aluminum coatings onto titanium coated stainless steel and brazing aluminum to aluminum/titanium coated steel
Huschke, E. G., Jr.↗
SNAP 8 refractory boiler development program - Mercury thermal shock testing of 2 1/2-inch-diameter bimetallic joints for SNAP 8 applications Topical report no. 4
Thermal shock testing of coextruded and brazed tubular joints of stainless steel and tantalum for SNAP-8 application
Thompson, S. R.↗
Bonding and joining technology - A compilation
Compilation of technical information including metallurgy, electrical repair, fabrication techniques for coating, bonding and brazing, and electron beam welding
Source record↗
Joining techniques for fabrication of composite air-cooled turbine blades and vanes
Air cooled turbine blades activated diffusion brazing and gas pressure welding, using composite finned configuration model
Berry, T. F.↗
High-temperature ceramic-to-ceramic seals
Noble-metal braze applied to appropriately prepared zirconia parts produces a gas-tight, durable seal that can withstand temperature of 825 C for over 2000 hours without deterioration.
Smart, W.↗
Regenerable metallic oxide systems for removal of carbon dioxide: A concept
Design concepts for portable canisters for removal of carbon dioxide are described. One is screen pack configuration consisting of brazed rectangular canister with four metal oxide packs inserted. Other is radial flow canister with perforated central tube. Methods of production and operating principles are presented.
Sutton, J. G.↗
Study and development of acoustic treatment for jet engine tailpipes
A study and development program was accomplished to attenuate turbine noise generated in the JT3D turbofan engine. Analytical studies were used to design an acoustic liner for the tailpipe. Engine ground tests defined the tailpipe environmental factors and laboratory tests were used to support the analytical studies. Furnace-brazed, stainless steel, perforated sheet acoustic liners were designed, fabricated, installed, and ground tested in the tailpipe of a JT3D engine. Test results showed the turbine tones were suppressed below the level of the jet exhaust for most far field polar angles.
Nelson, M. D.↗
Development of dispersion-strengthened Ni-Cr-ThOz alloys for the space shuttle thermal protection system
Manufacturing processes were developed for TD-NiCr providing small sheet (45 x 90 cm), and larger sheet (60 x 150 cm) and foil. The alternate alloy, DS-NiCr, was produced by pack-chromizing Ni-ThO2 sheet. Formability criteria are being established for basic sheet forming processes, which are brake forming, corrugation forming, joggling, dimpling, and beading. Resistance spot welding (fusion and solid state), resistance seam welding, solid state diffusion welding, and brazing are included in the joining programs. Major emphasis is centered on an Al-modified Ni-Cr-ThO2 alloy development. These alloys, containing 3 to 5% Al, form the protective Al2O3 scale. This enhances oxidation resistance under reentry conditions. Both TD-NiCrAl and DS-NiCrAl alloys are included. A tentative composition of Ni-16Cr-3.5Al-2ThO2 was selected based on oxidation resistance and fabricability.
Blankenship, C. P.↗