Solubility of refractory metals and alloys in alkali metals First quarterly report, Mar. 3 - May 28, 1966
Solubility and corrosion resistance of refractory metals and alloys determined in liquid alkali metals
LIQUID METAL↗
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Some Investigations of the General Instability of Stiffened Metal Cylinders VIII : Stiffened Metal Cylinders Subjected to Pure Torsion
An experimental investigation of the general instability of reinforced thin-walled metal cylinders was carried out at the California Institute of Technology. The basic parameters involved were the spacing and sectional properties of the stiffening elements, the wall thickness, and the diameter of the cylinder. An analysis of the experimental data led to a suitable parameter for estimating the general instability stress of reinforced metal cylinders when subjected to pure torsion loading.
CYLINDERS, THIN - TORSION↗
Metal Construction Development. Part III : Strip Metal Construction - Wing Ribs
Strip metal construction of wing spars are presented as well as workshop practices.
WING SPARS, ARMSTRONG WHITWORTH↗
Vacuum UV coatings, microcircuitry welding, metal polishing study, absolute spectral response system, parabolic reflectors, soldering to electrodeposited metals Quarterly progress report, Jan. 1 - Mar. 31, 1966
Vacuum ultraviolet coatings, microcircuitry welding, metal polishing, absolute spectral response system, parabolic reflectors, and soldering to electrodeposited metals
POLISHED METAL↗
Surface ionization studies on refractory metals and metal alloys
Surface ionization studies on refractory metals and metal alloys used in long term contact ion engine operation
SURFACE IONIZATION↗
Thermoelectric metal comparator determines composition of alloys and metals
Emf comparing device nondestructively inspects metals and alloys for conformance to a chemical specification. It uses the Seebeck effect to measure the difference in emf produced by the junction of a hot probe and the junction of a cold contact on the surface of an unknown metal.
Stone, C. C.↗
Soft metal plating enables hard metal seal to operate successfully in low temperature, high pressure environment
Soft metal plating of hard metal lip seal enables successful operation of seal in a cryogenic fluid line under high pressure. The seal is coated with a thin film of 24 carat gold on the lip area to provide antigall and seal properties.
Lamvermeyer, D. J.↗
The less common refractory metals /rhenium, technetium, hafnium, noble metals/.
Less common refractory metals /rhenium, technetium, hafnium, noble metals/ properties, phase equilibria, etc
Maltz, J.↗
Extension of laser harmonic-frequency mixing techniques into the 9 mu region with an infrared metal-metal point-contact diode
Laser harmonic-frequency mixing techniques extended into IR with IR metal-metal point contact diode
Daneu, V.↗
A study of metal oxygen and metal nitrogen systems for use as reduced pressure standards
Metal-oxygen and metal-nitrogen systems for use as reduced pressure standards using Sieverts apparatus
Lundin, C. E.↗
Refractory metal valves for 1900 deg F service in alkali metal systems
Evaluation of refractory metal alloy metering and isolation valves for alkali metal service at 1900 F
Harrison, R. W.↗
Metal-oxide-metal, M-O-M, detector
Metal-oxide-metal tunnel diode properties, discussing parametric effects on small and large signals detector operation
Haddad, G. I.↗
Metallic transfer between metals in sliding contact examined by auger emission spectroscopy
Metallic transfer between polycrystalline metals in sliding contact was examined. Hemispherical riders of iron, nickel, and cobalt were slid on tungsten, tantalum, niobium, and molybdenum disks in ultrahigh vacuum. Auger emission spectroscopy was used to monitor the elemental composition of the disk surfaces. Iron, nickel, and cobalt transferred to tungsten, whereas only cobalt transferred to tantalum, niobium, and molybdenum. The results of this investigation are discussed in terms of the cohesive energy and strain hardening characteristics of the specimen materials.
Pepper, S. V.↗
Metal-metal laminar composites for high temperature applications
A study was conducted to obtain indications of the potentialities of laminar metal-metal composites for elevated temperature use. Most of the composites consisted of multiple layers or laminae of tungsten alternated with laminae of Nichrome V, a ductile, weaker but oxidation-resistant alloy. Composites with 50 volume percent of each phase were tested in tension and stress rupture at temperatures of 871 and 1093 C (1600 and 2000 F) and in impact at 23 and 524 C (73 and 975 F). A tension and a short time stress-rupture test was conducted on specimens of 77 v/o W-Re-Hf-C/23 v/o Inconel alloy 600 at 1093 C (2000 F).
Hoffman, C. A.↗
Metal-metal laminar composites for high-temperature applications.
A study was conducted to obtain indications of the potentialities of laminar metal-metal composites for elevated-temperature use. Most of the composites consisted of multiple layers or laminae of tungsten alternated with laminae of Nichrome V, a ductile, weaker, but oxidation-resistant alloy. Composites with 50 vol % of each phase made from 0.0025 cm, 0.0125 cm, or 0.050 cm laminae, were tested in tension and stress rupture at temperatures of 871 and 1093 C and in impact at 23 and 524 C. A tension and a short-time stress-rupture test was conducted on specimens of 77 vol % W-Re-Hf-C/23 vol % Inconel Alloy 600 at 1093 C.
Hoffman, C. A.↗
Harmonic mixing characteristics of metal-barrier-metal junctions as predicted by electron tunneling
The bias dependence of the nonlinear mixing characteristics of metal-barrier-metal junction currents is deduced assuming an electron tunneling model. The difference-frequency beat voltage at frequency omega sub 1 - (n x omega sub 2), when n is an integer and omega sub 1 and omega sub 2 are the assumed frequencies of two induced currents, is found to have n zeros as the diode bias is varied. Recent experimental observations have demonstrated such characteristics.
Faris, S. M.↗
Investigation of metal hydride materials as hydrogen reservoirs for metal-hydrogen batteries
The performance and suitability of various metal hydride materials were examined for use as possible hydrogen storage reservoirs for secondary metal-hydrogen batteries. Lanthanum pentanickel hydride appears as a probable candidate in terms of stable hydrogen supply under feasible thermal conditions. A kinetic model describing the decomposition rate data of the hydride has been developed.
ONISCHAK↗
Coupling characteristics of thin-film metal-oxide-metal diodes at 10.6 microns
Direct detection experiments have demonstrated the coherent coupling of 10.6 micrometer radiation into photolithographically fabricated metal-oxide-metal tunnel junctions. A CO2 laser beam mechanically chopped at 1 KHz was focused at a variable angle of incidence with a power density of about 10 W/sq cm at the diodes. Diodes in which the junction resistance was much greater than the lead resistance displayed angular characteristics dominated by coherent antenna coupling.
Wang, S. Y.↗