Extrusion die for refractory metals Patent
Development and characteristics of frusto-conical die nib for extrusion of refractory metals
Gyorgak, C. A.↗
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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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Refractory composite materials for spacecraft thrust chambers Final report, 23 Jul. 1968 - 22 Feb. 1970
Hot firing tests with FLOX/methane propellants for evaluating pyrolytic refractory composite materials for thrust chambers
Campbell, J. G.↗
Long term drift of some noble and refractory metal thermocouples at 1600 K in air, argon, and vacuum
Long-term drift of noble and refractory metal thermocouples at 1600 K in air, argon, and vacuum
Glawe, G. E.↗
Advanced refractory alloy Corrosion Loop program Quarterly progress report for period ending 15 Jan. 1971
Design, fabrication, and evaluation of T-111 Rankine system refractory alloy corrosion test loop
Smith, J. P.↗
Application of regression analysis techniques to refractory coating measurement experiments
Regression analysis procedure for evaluating reliability of nondestructive refractory coating thickness measurements
Junkin, B. G.↗
High temperature oxidation resistant coatings. Coatings for protection from oxidation of superalloys, refractory metals, and graphite
High temperature oxidation resistant coatings for superalloys, refractory metals, and graphite
Source record↗
Refractory metal valves for 1900 deg F service in alkali metal systems
Evaluation of refractory metal alloy metering and isolation valves for alkali metal service at 1900 F
Harrison, R. W.↗
SNAP-8 refractory boiler development - Corrosion of oxygen contaminated tantalum in NaK
SNAP 8 refractory boiler development - corrosion of oxygen contaminated tantalum in NaK
Harrison, R. W.↗
Development of fabrication process for metallic fibers of refractory metal alloys Final report
Production of small diameter refractory metal alloy wires for superalloy reinforcement
Adams, F. R.↗
Design review of the Bare Refractory Double-Containment (BRDC) boiler number 5 for PCS, SNAP-8
Bare refractory double containment boiler for SNAP 8 power conversion system utilizing mercury, tantalum, zirconium, and type 300 stainless steel materials
Chalpin, E. S.↗
Some investigations of refractory metal systems of thermionic interest
Refractory metal thermionic emitter-support systems, measuring surface interdiffusion at high temperatures
Horner, M. H.↗
The Varestraint test for refractory metals
Refractory metal alloys hot crack sensitivity testing by Varestraint method, using ultrahigh purity inert atmosphere
Gold, R. E.↗
Welding and aging of bimetallic refractory metal joints
Bimetallic refractory metal joints electron beam welding and aging for applications to in-pile thermionic converters
Phillips, W. M.↗
Long-term drift of some noble- and refractory- metal thermocouples at 1600 K in air, argon, and vacuum
Thermal emf changes for noble and refractory metal thermocouples, determining drift in high temperature air, Ar and vacuum environments for long time periods
Glawe, G. E.↗
A lime refractory for high temperature use
Lime refractory fabrication and properties for high temperature applications, describing production of calcium oxide grain by sintering process from commercial calcium hydroxide
Benson, J. T.↗
High voltage electrical insulation coating for refractory materials
Formula and process have been developed for coating refractory metal surfaces with high voltage electrical insulation for use at temperatures to 600 C. Coatings were specifically developed as an insulation for the surface of a perforated, molybdenum, ion-accelerator grid, but are not limited to this application.
Lent, W. E.↗
Floating zone process for drawing small diameter fibers of refractory materials
New process produces controlled purity, very high strength, single crystal fibers of materials with melting points to 4000 C. Process has been used to make single crystal fibers of highly refractory ceramics such as aluminum oxide, titanium carbide and yttrium oxide.
Westfall, L. J.↗
The Varestraint test for refractory metals, task 2
The principles of the Varestraint test were applied to the evaluation of refractory metal alloys. This required development of a special test apparatus employing a modest specimen size for improved economy and compatible with the high purity inert atmosphere required for welding these alloys. Minimum specimen size is desirable because of the high cost of these alloys and also to permit timely testing of limited production developmental alloys. The Varestraint apparatus satisfies these requirements by providing a timely and economic test for hot crack sensitivity. This test can be used both for alloy development and production surveillance. The test apparatus was designed for use in vacuum purged dry boxes and is completely compatible with high purity inert atmosphere. Augmented strain can be varied continuously from 1/4% thru 4%. In addition to varying the augmented strain, the primary Varestraint variable, the effect on hot cracking of varying other weld parameters such as unit weld length heat input have also been studied. Test reproducibility, in terms of bending or strain rate, was demonstrated using high speed photography.
Lessmann, G. G.↗