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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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X-ray diffraction, differential thermal analysis, and chemical analysis of sintered nickel electrode at graphitic level and high temperatures
Testing and evaluation of nickel-cadmium cells - vibration, shock, acceleration, and life cycle tests
Effect of fiber size opon internal surface area and pore size of nickel fiber metal plaques
Characterization of electrodes in nickel-cadmium spacecraft batteries prior to and after cyclic testing
Phenolphthalein leakage, capacity, cell short, immersion seal, overcharge, and internal resistance tests on nickel-cadmium battery
Tungsten-nickel-copper ternary alloys for high temperature applications
Active compound formation on battery nickel oxide electrode during charge, overcharge, and discharge
Nickel-cadmium battery immune to damage from overcharge and overdischarge
Melting and casting procedures, strength and ductility, oxidation resistance, and metallurgy of new series of nickel alloys
Evaluation program for secondary spacecraft cells - acceptance testing of 5.0 ampere-hour nickel-cadmium cells
Thermal expansion of polycrystalline nickel oxide in oxygen atmosphere with 5 percent nitrogen to 1930 degrees C, noting grain size
Thermal emittance of nickel as function of oxide thickness measured, using filament in vacuum technique and microphotography
Cycle-life tests of nickel-cadmium battery cells - spacecraft electronic equipment
A program has been initiated to develop a material with superior properties at elevated temperatures for utilization in turbine blade applications. A nickel-base superalloy can provide the necessary high temperature strength by using the maximum capability of the three available strengthening mechanisms - intermetallic gamma prime precipitation (Ni3Al), solid solution strengthening with refractory and precious metals, and stable carbide formations through the addition of strong carbide forming elements. A stress rupture test at 2000 deg F and 15,000 psi was formulated to approximate the desired properties. By adding varying amounts of refractory metals (Mo, W and Ta) it was possible to statistically analyze the effects of each in a basic superalloy composition containing fixed amounts of Co, Cr, C, B, Sr, and Ni at three separate levels of AL and Ta. Metallographic analysis correlated with the mechanical properties of the alloys; those with few strengthening phases were weak and ductile and those with excessive amounts of intermetallic phases present in undesirable morphologies were brittle.
Effect of cold reduction and thermal treatment on tensile properties of nickel-beryllium alloy at cryogenic temperatures
Dispersion strengthened nickel base alloy using high intensity arc process
Acceptance tests of sealed nickel-cadmium secondary spacecraft cells with vulcanized neoprene terminal seals
Evaluating electroformed nickel to stainless steel resistance spot welds at room and cryogenic temperatures