A microscopic and thermal study of the solidification of hexadecane Annual summary report, 21 Nov. 1968 - 31 Dec. 1969
Microscopic and thermal study of n-paraffins as phase change thermal control materials
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Microscopic and thermal study of n-paraffins as phase change thermal control materials
Microscopic reversibility for rates of chemical reactions with partial resolution of product and reactant states
Microscopic study of solid/liquid phase change in several members of paraffin family
Ammonium perchlorate decomposition, deflagration, sublimation, crystal growth and surface properties, using scanning electron microscope
Metal particles additives behavior in solid rocket propellant combustion, using scanning electron microscope
Bi polycrystalline film grown by vacuum deposition on amorphous substrates investigated for electron microscope beam effects
Electron microscope-thin film microprobe techniques in biomaterial studies of chemical segregation, species diffusion and small particle analysis
Thickness measurement for thin films in inaccessible locations using scanning electron microscope, comparing accuracy with interferometric techniques
Senescent Drosophila melanogaster flight muscle electron microscopic examination showing mitochondria in stages of degeneration
Study of defect structures with field ion microscope
Measuring intermittent enhancement of blinking effect upon addition of neon to imaging gas in helium-tungsten field-ion microscope
Scanning electron microscope used to determine surface morphology of TD-NiCr oxidized at 800 to 1200 deg for up to 64 hours
Electron microscope, electron diffraction, and electron microprobe analysis of defective solid state weldment on liquid hydrogen tank from Apollo 12 fuel cell system
Solar wind microscopic structure, examining interplanetary wave-particle interactions
Chemical reaction rate microscopic reversibility, observing rotational vibrational and/or translational states dependence of products reactants
High resolution phase contrast microscope adaptation for gastight glove box use with stage and focusing knobs in box for Apollo sample microbiological examination
An ion microprobe and a laser microprobe were used to measure concentrations of corrosion-produced hydrogen on a microscopic scale. Hydrogen concentrations of several thousand ppm were measured by both analytical techniques below the fracture surfaces of hot-salt stress-corroded titanium alloy specimens. This segregation of hydrogen below fracture surfaces supports a previously proposed theory that corrosion-produced hydrogen is responsible for hot-salt stress-corrosion embrittlement and cracking of titanium alloys. These advanced analytical techniques suggest great potential for many areas of stress-corrosion and hydrogen embrittlement research, quality control, and field inspection applications.
Two screws and two washers, several small chips of tubing, and a fiber removed from a third screw were examined with the scanning electron microscope and the electron microprobe. The purpose of the examination was to determine the nature of the material on the surface of these samples and to search for the presence of meteoritic material.