Evaluation of two nickel-base alloys, alloy 713C and NASA TAZ-8A, produced by extrusion of prealloyed powders
Extruded prealloyed powder evaluation for two nickel-base alloys
Ashbrook, R. L.↗
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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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Study of color center formation in white powder compounds
White powder compounds of metal oxides for thermal protective coating of spacecraft
Berggren, C. C.↗
Dispersion-strengthened nickel produced from ultrafine comminuted powders
Dispersion strengthened nickel produced from ultrafine comminuted powders
Quantinetz, M.↗
Internal void formation in powder metallurgy tungsten.
Substructural void formation in tungsten powder metallurgy as function of annealing temperature for doped, undoped and electron beam melted material
Das, G.↗
Creep of powder metallurgy rhenium at 0.43 to 0.72 T sub m.
Creep rate-stress-temperature relations for powder metallurgy rhenium, discussing activation energy
Raffo, P. L.↗
Dielectric properties of basalt powders Final report
Density and particle size effects on complex dielectric constant of basalt powders in X and K bands
Source record↗
Evaluation of two nickel-base alloys, alloy 713C and NASA TAZ-8A, produced by extrusion of prealloyed powders
Prealloyed powders of Ni base alloys, Alloy 713C and NASA TAZ-8A made by inert gas atomization for improved strength and ductility
Ashbrook, R. L.↗
High-strength dispersion-strengthened nickel produced from ultrafine comminuted powders
Ni dispersion-strengthened composites from ultrafine comminuted powders, describing forming techniques and test results
Quatinetz, M.↗
A new type of powder maser
Maser amplifier with nonoriented Fe-doped rutile powder as active material, observing broad absorption bands under magnetic field
Hughes, W. E.↗
ESR investigation of photodamage to zinc oxide powders
Iron cyanide surface additives effect on photodamage to ZnO powder, using ESR method
Sancier, K. M.↗
Apollo 12 seismic signal - Indication of a deep layer of powder
Seismic signal by Apollo 12 lunar module impact indicating deep layer of powder by signal propagation
Gold, T.↗
Evaluation of a cobalt-base alloy, HS-31, made by extrusion of prealloyed powders
Evaluation of cobalt base alloy made by extrusion of prealloyed powders
Ashbrook, R. L.↗
Shock tube powder dispersing apparatus Patent
Apparatus for mechanically dispersing ultrafine metal powders subjected to shock waves
Todd, H. H.↗
A residual gas analysis technique for studies of photochemical surface reactions of powders
Residual gas analysis for ultraviolet degradation studies on aluminum oxide powder
Colony, J. A.↗
Characterization of porous powder metal matrices for transpiration cooled structure
Porous powder metal parts for use in transpiration cooling
Regan, R. E.↗
Evaluation of a cobalt-base alloy, HS-31, made by extrusion of prealloyed powders
Tensile and stress rupture tests of Co base alloy bars extruded from prealloyed powders made by Ar gas atomization
Ashbrook, R. L.↗
Lunar fines and terrestrial rock powders - Relative surface areas and heats of adsorption
Apollo 11 lunar fines and ground terrestrial mafic rock powders effective surface areas and heats of adsorption, using Brunauer-Emmett-Teller Kr adsorption method
Cannon, W. A.↗
Gravity flow of powder in a lunar environment. Part 2: Analysis of flow initiation
A small displacement-small strain finite element technique utilizing the constant strain triangle and incremental constitutive equations for elasticplastic (media nonhardening and obeying a Coulomb yield condition) was applied to the analysis of gravity flow initiation. This was done in a V-shaped hopper containing a powder under lunar environmental conditions. Three methods of loading were examined. Of the three, the method of computing the initial state of stress in a filled hopper prior to drawdown, by adding material to the hopper layer by layer, was the best. Results of the analysis of a typical hopper problem show that the initial state of stress, the elastic moduli, and the strength parameters have an important influence on material response subsequent to the opening of the hopper outlet.
Pariseau, W. G.↗