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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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Reaction mechanism of metastable peak formation on stainless steel cycloid envelope of mass spectrometer exposured to gaseous mixtures
Friction and wear of low melting gallium alloys on stainless steel and nickel in argon and vacuum environment
Rapid depressurization transients effect on saturated pool boiling system from stainless steel surface
Diffusion welding of aluminum alloys and austenitic stainless steel tubular joints
Martensitic transformation effect in austenitic stainless steel at cryogenic temperatures to determine weld failures in Centaur bulkheads
Thermophysical properties of aluminum, beryllium, Inconel, stainless steel, and titanium alloys and primary oxides
Scanning electron microscopy (SEM) and Auger electron microscopy (AEM) were employed to observe elemental surface decomposition resulting from the brazing of a copper-treated steel. Two types of steel were used for the study, stainless steel (treated with a eutectic silver-copper alloy), and low-carbon steel (treated with pure copper). Attention is given to oxygen partial pressure during the processes; a low enough pressure (8 x 10 to the -5th torr) was found to totally inhibit the spreading of the filler material at a fixed heating cycle. With both types of steel, copper treatment enhanced even spreading at a decreased temperature.
A heat treating fixture is disclosed in which the shape of the metal specimen is maintained by cold rolled steel support plates. Glide sheets of stainless steel, coated with boron nitride, in contact with each face of the metal specimens, allow for lateral expansion of the metal specimens without binding. Grooved support bars separate the glide sheets from the upper and lower support plates and allow flow of quenching fluid to the metal specimen.
A research and development program on the hydrochlorination of silicon tetrachloride and metallurgical grade (m.g.) silicon metal to trichlorosilane was carried out as scheduled. Effects of pressure and temperature on this reaction are reported. The presence of HCl in the reaction product mixture was successfully analyzed. Approximately 0.1% to 0.5% HCl based on total chlorosilanes were produced by the hydrochlorination reaction. Experiments on the corrosion study were carried out to evaluate a variety of metals and alloys as the material of construction for the hydrochlorination reactor. Material includes carbon steel, nickel, copper, Alloy 400 (Monel), stainless steel (Type 304), Incoloy 800H and Hastelloy B-2. The corrosion test was carried out at reaction temperature of 500 C, pressure of 300 psig and H2/SiCl4 feed ratio of 2.0 for a total of 87 hours. Results of the corrosion test show that all the test samples achieved a weigh gain.
Cavitation damage resistance of refractory and stainless steel alloys in liquid potassium at high temperatures
Comparative tensile and fatigue properties of welded Centaur stainless steel tank joint configurations at room and liquid hydrogen temperatures
Plasma sprayed alumina particle size and purity, and stainless steel surface roughness effects on coating-substrate bond strength
Emissivity of titanate-coated stainless steel, niobium-zirconium alloy, and beryllium for space radiators
Hydrogen embrittlement of stainless steel, nickel maraging steel and Ti-6Al-4V alloy
Improved ultrasonic cavitation methods for removing microorganisms from stainless steel strip surfaces
Titanium oxide, zirconium titanate, and barium titanate coatings on niobium-zirconium tubes and calcium titanate and iron titanate on stainless steel emittance testing
Heat transfer and pressure drop effects on stainless steel inner passage of single tube heat exchanger from water boiling
Joining of refractory-austenitic bimetal tubing of niobium and stainless steel using electron beam, gas tungsten arc, and plasma arc welding techniques