The less common refractory metals - /Rhenium, hafnium, technetium, noble metals/
Physical and mechanical properties of rhenium, technetium, hafnium, noble metals, and related alloys reviewed in terms of availability and costs
Maltz, J.↗
SEARCH · Search NASA
Results for “REFRACTORY METAL”
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.
High temperature protective coatings for refractory metals Progress report, 21 Oct. 1967 - 21 Jan. 1968
Change in thickness and mechanical properties of iridium coating on molybdenum determined after heat treatment
Rexer, J.↗
Space-power-system Material Compatibility Tests of Selected Refractory Metal Alloys with Boiling Potassium
Turbogenerator material compatibility tests of niobium and tantalum alloys with boiling potassium
Moss, T. A.↗
High temperature protective coatings for refractory metals Final technical report
High temperature protective coatings of iridium on tantalum, niobium, molybdenum, and tungsten
Rexer, J.↗
Space-power-system material compatibility tests of selected refractory metal alloys with boiling potassium.
Niobium and tantalum alloys compatibility with boiling potassium tested for applications to turboelectric space power system
Moss, T. A.↗
Fibering of oxides in refractory metals.
Fibering of metal oxides in Nb and Ta matrices prepared by extrusion and powder metallurgy, discussing mechanical properties
Jech, R. W.↗
Field-electron-microscopy studies of cesium layers on various refractory metals - Work function change.
Work function variation with Cs layer coverage on W, Mo, Re and Ni substrates, using field electron microscopes
Strayer, R. W.↗
Hydrogen effects in refractory metals.
Hydrogen effects on molybdenum, tungsten, columbium and tantalum, studying solubility, permeability, diffusion and phase diagrams
Chandler, W. T.↗
Thermodynamic properties of interstitial elements in the refractory metals Semiannual report, 1 Dec. 1967 - 31 May 1968
Thermodynamic behavior of interstitial elements in Mo, W, Nb, and Ta
Bansal, P. P.↗
High temperature glass coatings for superalloys and refractory metals
New glasses are used as protective coatings on metals and alloys susceptible to oxidation at high temperatures in oxidizing atmospheres. Glasses are stable and solid at temperatures up to 1000 deg C, adhere well to metal surfaces, and are usable for metals with broad range of expansion coefficients.
Chapman, J. W.↗
Oxidation-resistant coatings for refractory metals used in inert atmospheres
Test conditions and results are reported for various coatings on a 1 percent zirconium columbium alloy at a temperature of 2000 deg F. Molybdenum silicide over molybdenum is most effective coating, tin-aluminum coating is adequately protective, chromium-molybdenum silicides are not protective.
Phillips, W. M.↗
Thermodynamic properties of interstitial elements in the refractory metals Progress report, 1 Jun. - 30 Nov. 1969
Thermodynamic properties of carbon in molybdenum and tungsten at solubility limit
Gupta, D. K.↗
Effect of rhenium alloying on lattice dilation of the group VI-A refractory metals
Rhenium alloying effect on room temperature ductility of Cr, Mo and W, measuring lattice parameters by Debye-Scherer method
Garfinkle, M.↗
Determination of weldability and elevated temperature stability of refractory metal alloys. 5 - Weldability of tungsten base alloys
Weldability of tungsten base alloys and elevated temperature stability
Gold, R. E.↗
Determination of weldability and elevated temperatures stability of refractory metal alloys. 4 - Post weld annealing studies of T-3
Post weld annealing for stabilizing tungsten alloy weld structure
Lessmann, G. G.↗
Fast neutron reactivity effects for refractory metallic samples measured in a thermal homogeneous reactor
Fast neutron reactivity effects of reactor materials measured in thermal uranyl fluoride-water-solution reactor
Pierce, C. R.↗
High-temperature strength of refractory-metal wires and consideration for composite applications
Tensile and stress-rupture tests were conducted on wires of W-Hf-C, W-Re-Hf-C, ASTAR 811C (a tantalum alloy), and B-88 (a columbium alloy) at room temperature, 1093 C (2000 F), and 1204 C (2200 F). Metallographic examinations were also made of the wire microstructure after testing. Ultimate tensile strength values up to 2170 meganewtons per square meter (314000 psi) at 1093 C (2000 F) and 1940 meganewtons per square meter (281 000 psi) at 1204 C (2200 F) were obtained for W-Re-Hf-C wire. The best strength values obtained for a 100-hour rupture life were, 1410 meganewtons per square meter (205 000 psi) at 1093 C (2000 F) and 910 meganewtons per square meter (132 000 psi) at 1240 C (2200 F) for W-Re-Hf-C wire. The properties obtained suggested that the wires studied showed promise as potential fiber reinforcement in the 1093 to 1204 C (2000 to 2200 F) temperature range.
Petrasek, D. W.↗
Current status of refractory metals for structural applications
Explore the source record for details and available documents.
Ingram, J. C., Jr.↗