Kinetics of graphitization of a petroleum coke.
Crystal structure, activation energy and heat treatment temperatures for petroleum coke and a pyrolytic carbon, showing lack of temperature dependence to degree of graphitization
CARBON↗
SEARCH · Engineering Papers
Results for “HEAT TREATMENTS”
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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<fabrication of helium storage bottles< third quarterly progress report, may - jul. 1964
Helium storage bottle unit - formation, internal machining, shot peening, and heat treatment
STORAGE UNIT↗
Joining of Nickel and Nickel-Base Alloys
Nickel and nickel- base alloys are amenable to joining with many of the familiar joining processes. Some new joining processes also have been used successfully. In general, conventional joining procedures are used with only slight required modifications, depending on the particular alloy to be welded. However, some special precautions must be taken. Harmful materials must be removed from the joint or surrounding areas or they may damage the weld and the nearby heated parent metal. Some high-strength age hardenable alloys are prone to cracking in or near joint areas, unless the material is in the proper condition of heat treatment prior to joining operations. Foreign material and flux residues left from joining operations can cause trouble in subsequent service if not removed. Procedures for joining these alloys have been developed that eliminate or minimize the usual difficulties that have been experienced. When proper procedures are employed, joining of nickel and nickel- base alloys can be performed satisfactorily.
Vagi, J. J.↗
Investigation of supercurrent instabilities in type II superconductors First quarterly progress report
Ti-Nb microstructural quantitative examination to determine heat treatment and plastic deformation effects on current density and other superconductor parameters
MICROSTRUCTURE↗
Nucleate boiling instability of alkali metals.
Nucleate boiling instability of alkali metals noting effects of surface material, chemical treatment, heat flux and cavity geometry
HEAT FLUX↗
Nucleate boiling instability of alkali metals.
Nucleate boiling instability of alkali metals noting effects of surface material, chemical treatment, heat flux and cavity geometry
HEAT FLUX↗
Magnetic susceptibility of glassy carbon
Magnetic susceptibility of glassy carbon at room temperature with respect to magnetic field strength, heat treatment temperature, and high temperature tensile deformation
Fischbach, D. B.↗
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.↗
Effect of electron radiation on silicon nitride insulated gate field effect transistors.
Electron radiation stability of silicon nitride insulated gate FET with passivation layers and heat treatment, noting contamination effects
Newman, P. A.↗
Thin-film CdS diodes heat treated in various ambients.
Thin film Au-CdS-Cr diodes interfacial barrier height after heat treatment in sulfurized silicone oil and various gaseous ambients, noting photoresponse
Learn, A. J.↗
A review of factors influencing the crack tolerance of titanium alloys.
Crack tolerance factors for titanium alloys including cryogenic temperatures, heat treatment, cold working, etc
Brown, W. F., Jr.↗
An investigation of methods to improve the wear resistance of gas-bearing ceramic materials.
Wear resistance improvement of gas bearing aluminum oxides ceramic materials noting heat treatment, neutron irradiation, Au plating and surface coating deposition
Rowe, H. H., Jr.↗
Local atomic arrangements in a nickel-10 atomic percent tungsten alloy.
Single crystal and polycrystal Ni-W alloy local atomic arrangements as function of heat treatment and cold deformation
Ammons, A. M.↗
A strong weldable aluminum alloy for aerospace systems.
Weldable aluminum alloys for aerospace systems, discussing composition and mechanical properties, strengthening, heat treatment and arc welding
Schultz, R. A.↗
Effects of hydrogen on metals
Several rules to guide choice of materials, and methods of welding, electroplating, and heat treatment will provide a method for minimizing failures in storage tanks and related hardware. Failures are caused by high-pressure hydrogen effects, the formation of hydrides in titanium, and hydrogen absorption through various metals processing techniques.
Cataldo, C. E.↗
Mechanism of the photovoltaic effect in 2-6 compounds Progress report, 1 Oct. 1968 - 31 Mar. 1969
Heat treatment, illumination and darkness effects, and photovoltaic properties of Cu2S-CdS heterojunctions
Bube, R. H.↗
Development of lithium diffused radiation resistant solar cells Quarterly report
Effect of sintering TiAg contact on p/n cells from effect of heat treatment on lithium diffused cells
Payne, P.↗
Summary of applied research program in thermionic conversion during recent years.
Thermionic converter improvements by electronegative additives and emitter surface finishes, noting cesium oxide, heat treatments with electropolishing, electroetching, etc
Lieb, D.↗