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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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In ball milling metal powders to submicron size, various salts are more effective as grinding aids than conventional surfactants. Absolute ethyl alcohol is used as the grinding liquid.
Scale model of submerged VLF antenna using lossy ceramic powder to model ice and snow for submarine communication, geophysics, etc
Porous copper mandrels prevent uneven deformation of beryllium machining blanks. The beryllium powder is arranged around these mandrels and hot isostatically pressed to form the blanks. The mandrels are then removed by leaching.
Charging submicron carbon powder for colloidal particle thrustors
Surface parameter measurements of stannic oxide in powder, ceramic and gel forms by nitrogen adsorption techniques
Proton-irradiation darkening of rock powders, noting contamination, temperature effects and applications to solar wind darkening of moon
Optical properties of moon quantitatively compared with powder samples, bombarded with ions from hydrogen discharge plasma
Electron microscopy technique for determining dispersoid distribution in powder blends
Internal reflection spectroscopy of powdered quartz fractions
Shaping of precipitation hardened stainless steels by casting and powder metallurgy
Chromium and nickel powders from reduction of chromium and nickel oxides with magnesium, lithium, or sodium vapors
Role of chemical reactions in comminution mechanism of ductile metals into ultrafine powders by grinding
Spectral reflectance properties of silicate rock powders in 0.4 to 2.0 micron range
Laboratory equipment to purify submicron nickel powder by hydrogen fluidization
Mechanical properties of hot pressed compacts of powdered titanium alloys
Nickel powders and plaques for nickel-cadmium cell plates
Measurement of radiative thermal conduction of ideal powder as function of temperature
Fabrication of cermets of uranium nitride and tungsten or molybdenum from mixed powders and from coated particles for nuclear fuel elements