Advancing Additively Manufactured Al 6061 RAM2 using Laser Powder Directed Energy Deposition
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Additive Manufacturing↗
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Results for “Powder”
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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Microstructure and corrosion properties of sensitized laser powder bed fusion printed Inconel 718 to dissolve support structures in a self-terminating manner
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Christopher S. Lefky↗
Build Surface Roughness and Internal Oxide Concentration for Laser Powder Bed Fusion of IN718
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Lonnie A. Smith↗
COMPARISON OF COMMERCIAL, SPHERICAL POWDER AND WIRE BUNDLE TUNGSTEN IONIZERS
Cesium ionization on porous tungsten structures in terms of neutral fraction, critical temperature, and flow rate
CESIUM ION↗
Pressure molding of powdered materials improved by rubber mold insert
Pressure molding tungsten microspheres is accomplished by applying hydraulic pressure to a silicone rubber mold insert with several barrel shaped chambers which is placed in a steel die cavity. This technique eliminates castings containing shear fractures.
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A preliminary investigation of the thermal history of powder particles during plasma spraying
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Grisaffe, S. J.↗
Evaluation of infrared spectrophotometry for compositional analysis of lunar and planetary soils. part ii- rough and powdered surfaces
Infrared spectrophotometry evaluated for compositional analysis of lunar and planetary soils
INFRARED SPECTROPHOTOMETER↗
Effects of a simulated solar wind on the photometric properties of rocks and powders.
Simulated solar wind bombardment found to drastically affect color, albedo and photometric properties of rocks similar to lunar surface
LUNAR SURFACE↗
High-performance cesium ionizers made from sized spherical tungsten powder.
Tungsten microspheres used to fabricate cesium ionizers having improved uniformity, pore character and ionization performance
POROUS MATERIAL↗
Specimen Holder Design Improves Accuracy of X-Ray Powder Analysis
Specimen holder for X ray diffraction analysis presents the specimen to the incident X rays in a curvature. This permits the use of an X ray beam having a larger divergence angle, the beam intensity is increased, and the statistical accuracy of analysis is improved.
Mack, M.↗
Creep properties and structure of a zinc- copper-titanium alloy prepared by powder metallurgy
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Bartow, C. J.↗
Properties of powder ground in ultrahigh vacuum Final technical report, 24 Aug. 1965 - 23 Aug. 1966
Lunar soil properties determination through simulation of rock grinding in ultrahigh vacuum
ROCK↗
Photodesorption of oxygen from nickel oxide powder
Photodesorption of oxygen from nickel oxide at room temperature using 635, 705, and 1070 millimicron light
DESORPTION↗
Apparatus to measure mid-infrared spectral emittance of cold powders in a vacuum.
Mid-IR spectral emittance measuring apparatus, discussing range of performance, systems response, etc
THERMAL EMISSION↗
Electron Microprobe Analyses of Powders Darkened by Simulated Solar-Wind Irradiation
Electron microprobe analysis of quartz and alumina darkening upon solar wind ion bombardment, noting existence of iron, tungsten and carbon in samples
SOLAR WIND↗
Health hazards of ultrafine metal and metal oxide powders
Study reveals that suggested threshold limit values are from two to fifty times lower than current recommended threshold limit values. Proposed safe limits of exposure to the ultrafine dusts are based on known toxic potential of various materials as determined in particle size ranges.
Boylen, G. W., Jr.↗
Properties of powdered titanium alloys Final report
Physical properties of powered titanium alloys
Friedman, G.↗
Interior ballistics of powder charges
The development of very large size solid rocket engines cannot be accomplished, as in the case of small rocket engines, by empirical methods requiring a great number of full-scale firings. It is therefore necessary to predict rocket operation from data obtained on charges of different size and geometry. This paper presents a mathematical method for determining analytically the rocket engine thrust and chamber pressure development curves from the charge and engine geometry, the heat of explosion the kinetics characteristics and any other parameters affecting engine operation. It is shown that it is possible to compute empirical values for burning rate and erosion effects from experimental firings. Following a brief survey of the fundamentals of this method, the procedure is illustrated by four representative examples.
J Boisson↗