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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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Protective coating containing a plasma arc sprayed mixture of hafnium oxide and zirconium diboride will withstand high temperatures in an oxygen rich atmosphere. Used on a homogeneous tungsten thermocouple, it does not flake or crack on subsequent cooling and reheating, and does not degrade the thermocouple response time.
Brazing process uses vapor-deposited titanium and an aluminum-zirconium-silicon alloy to prevent formation of brittle intermetallic compounds in stainless steel and aluminum bonding. Joints formed by this process maintain their high strength, corrosion resistance, and hermetic sealing properties.
Graphite effect on molybdenum-carbide composite properties and tungsten, vanadium, hafnium, tantalum, niobium, and zirconium metal systems
Oxidation resistant coatings on niobium-titanium- zirconium alloy sheet tested at high temperatures
High temperature galvanic cell made of calcium stabilized zirconium oxide electrolyte to monitor oxygen pressure in space capsules
Fluid-bed fluoride volatility process recovers uranium from uranium fuels containing either zirconium or aluminum. The uranium is recovered as uranium hexafluoride. The process requires few operations in simple, compact equipment, and eliminates aqueous radioactive wastes.
Zirconium oxide coating enables the determination of hot gas flow patterns on liquid rocket injector face and baffle surfaces to indicate modifications that will increase performance and improve combustion stability. The coating withstands combustion temperatures and due to the coarse surface and coloring of the coating, shows the hot gas patterns.
Uranium, thorium, and plutonium are effectively prepared by magnesium-zinc reduction, using uranium oxides, thorium dioxide, and plutonium dioxide as starting materials. This technique is also useful in performing reduction of metals such as zirconium and titanium.
Tensile stress effect on critical current-carrying capacity of niobium-zirconium wire and niobium-tin ribbon superconductors at liquid helium temperature
Ceramics and ceramic engineering - zirconium oxygen carbon system, solid state ceramics, surface phenomena, radiation effects, and processing
Emittance and thermal cycling tests of stainless steel tubes coated with iron and calcium titanate, and niobium-zirconium tubes coated with iron titanate
Zirconium and titanium additions for improved mechanical properties and corrosion resistance of aluminum alloy sheet
Carbon and nitrogen stabilization in stainless steel and its effect on mass transfer in stainless steel niobium one percent zirconium potassium systems
Spectroscopic methods to measure ion and electron temperatures of thermally thin plasma in local thermal equilibrium, spectral distribution of zirconium lamp, and vortex stabilized arc
Hall effect and electric resistance of zirconium carbide niobium carbide and tantalum carbide hafnium carbide alloys
Delayed fracture tests and brittle properties of titanium aluminum zirconium alloy
Emittance testing of calcium titanate and iron titanate coated stainless steel tubes and thermal cycling tests of iron titanate coated niobium-zirconium tubes
Composite material, made by dispersing short tungsten-rhenium fibers randomly throughout zirconium oxide, is highly resistant to oxidizing environments at temperatures above 2000 degrees F. This reinforced ceramic is also thermal stress resistant.