Elevated temperature stress corrosion of high strength sheet materials in the presence of stress concentrators Final report
Mechanism of hot salt stress corrosion cracking of titanium base alloys
STRESS CORROSION↗
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SEMIANNUAL PROGRESS REPORT <MAR. 1, 1961 TO AUG. 31, 1961
Interdisciplinary materials research, polymers, alloys, metals, molecules and salts
NUCLEATION↗
THERMAL DECOMPOSITION OF HYDRAZINE
The Thermal Stability of Hydrazine has been studied in the temperature and pressure intervals of 175" to 250"C. and 300 to 430 p.s.i., Respectively. Previous studies of the decomposition of hydrazine indicated that several factors affect its stability (2, 5, 7). the rate of decomposition is increased by the presence of certain surfaces (especially metals and salts). pH, oxygen, and carbon dioxide. Further explosive decomposition Is attributable to the uncontrolled heterogeneous, gas-phase decomposition. These factors were considered in selecting the following experimental conditions: highly purified hydrazine was prepared in a nitrogen atmosphere, and this product was decomposed over triply distilled mercury in outgassed borosilicate glass tubes at ullages that were initially zero. This study also included the effects of added quantities of ammonia on the rate of decomposition and an investigation of the products of the decomposition.
Harold W. Lucien↗
Thermopotential measurements for molten cadmium chloride, cadmium bromide, and lead chloride.
Molten salts as thermoelectric materials investigated by subjecting molten cadmium chloride, cadmium bromide and lead chloride to a thermal gradient
CADMIUM COMPOUND↗
Development of a high temperature battery first quarterly technical report
High temperature battery development - zeolites, anode and cathode couples, and molten salts
CATHODE↗
Test performed by librascope reliability department on radio frequency connectors
Mechanical and electrical properties of radio frequency connectors subjected to thermal shock, altitude, humidity, and salt spray
MECHANICAL PROPERTY↗
Elevated temperature stress corrosion of high strength sheet materials in the presence of stress concentrators first interim report
High thermal stress salt corrosion cracking of high strength steel and titanium alloys in presence of stress concentrators
HIGH STRENGTH STEEL↗
Stress corrosion cracking of titanium alloys progress report, apr. 1 - jun. 30, 1964
Hot salt stress corrosion cracking in titanium alloys - chloride corrosion role determination using chlorine isotopes and relation between crack morphology and alloy structure
CRACK FORMATION↗
Submicron metal powders produced by ball milling with grinding aids
In ball milling metal powders to submicron size, various salts are more effective as grinding aids than conventional surfactants. Absolute ethyl alcohol is used as the grinding liquid.
Quatinetz, M.↗
Standards for electron probe microanalysis of silicates prepared by convenient method
Standard compositions suitable for electron probe microanalysis of various silicates are prepared by coprecipitation of specified salts with colloidal silica to form a gel which is decomposed into a powdered oxide mixture and compressed into thin pellets. These pellets of predetermined standard are compared with a silicate sample to determine its composition.
Walter, L. S.↗
Chemical milling solution produces smooth surface finish on aluminum
Elementary sulfur mixed into a solution of caustic soda and salts produces an etchant which will chemically mill end-grain surfaces on aluminum plate. This composition results in the least amount of thickness variation and pitting.
Lorenzen, H. C.↗
Use of steel and tantalum apparatus for molten Cd-Mg-Zn alloys
Steel and tantalum apparatus contains various ternary alloys of cadmium, zinc, and magnesium used in pyrochemical processes for the recovery of uranium-base reactor fuels. These materials exhibit good corrosion resistance at the high temperatures necessary for fuel separation in liquid metal-molten salt solvents.
Bennett, G. A.↗
Photosynthetic halophiles from Owens Lake Final report
Photosynthetic, halophilic bacteria, Chromatium, growth in water and in sodium salt solutions
PHOTOSYNTHESIS↗
Gaseous electrolytes for batteries and fuel cells Seventh quarterly report, 21 Feb. - 20 May 1966
Cells using amalgam-insoluble salt electrodes and examination of dense electrolytic solutions
BATTERY↗
Static electricity of polymers reduced by treatment with iodine
Treating organic polymers with iodine improves the electrical conductivity. Diffusion enables products of desired properties to be custom formulated. This eliminates a buildup of static electricity and the need for fillers or bound metal salts.
Hermann, A. M.↗
Coating protects magnesium-lithium alloys against corrosion
Coating protects newly developed magnesium-lithium alloys against corrosion. The procedure includes heating the ingots in a salt bath and rolling them to the desired sheet thickness. The black coating, which is tough though thin and ductile, is derived mainly from chromium.
Source record↗
Chemical milling solution reveals stress corrosion cracks in titanium alloy
Solution of hydrogen flouride, hydrogen peroxide, and water reveals hot salt stress corrosion cracks in various titanium alloys. After the surface is rinsed in water, dried, and swabbed with the solution, it can be observed by the naked eye or at low magnification.
Braski, D. N.↗
Pure xenon hexafluoride prepared for thermal properties studies
Preparation of a xenon hexafluoride and sodium fluoride salt yields a sample of the highest possible purity for use in thermal measurements. The desired hexafluoride can easily be freed from the common contaminants, xenon tetra-fluoride, xenon difluoride, and xenon oxide tetrafluoride, because none of these compounds reacts with sodium fluoride.
Malm, J. G.↗