SEARCH · Search NASA
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.
Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.
Mixture of uranium oxide, niobium oxide, and graphite of various carbon-to-oxygen ratios is heated to a temperature below the melting point of the noibium-uranium alloy. The alloy is produced by this method with voids predetermined as to size and total volume.
Pumped helium tests of 51 centimeter bore niobium tin magnetic coils
Nonlinear flux flow in single crystal niobium
Rhenium-niobium cylindrical thermionic converters with mechanically polished or electroetched emitters, comparing performance
Comparative performance of niobium cylindrical thermionic converters with vapor deposited rhenium, stressing emitters surface preparation
Cylindrical thermionic converter with vapor deposited rhenium emitter and niobium collector, measuring efficiency and power density
Fast neutron irradiation effect on niobium nitride current carrying capacity, showing enhancement
Apparent solubility of commercially pure and oxygen-doped tantalum and niobium in liquid potassium
Thermionic converter operation with 112 to 114 oriented tungsten emitter and niobium collector with oxygen
Performance characteristics of parallel plane, variable spaced thermionic converter with tungsten emitter and molybdenum-niobium collector
Computer acquired performance map of etched-rhenium, niobium planar diode
Ultrasonic attenuation and velocity measurements in normal and superconducting states of niobium
Computer processed performance data for thermionic converter with etched rhenium emitter and niobium collector
Analysis of superconducting niobium films to determine relationship of critical current density with film thickness and orientation in magnetic field
Organometallic compounds of niobium and tantalum useful for film deposition
Computer acquired performance data from physically vapor deposited tungsten-niobium thermoinic converter
Computer analysis of performance of chemically vapor-deposited tungsten, niobium thermionic converter based on temperatures of emitter, collector and cesium reservoir
Niobium nitride thin films very high critical current and field characteristics, noting deposition by sputtering