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HIGH-TEMPERATURE LIQUID-METAL TECHNOLOGY REVIEW. A Bimonthly Technical Progress Review. Vol. 1, No. 1

Description: Unclassified technical reports and papers in the hightemperature liquid- metal field are reviewed. All phases of liquid-metal technology pertinent to the space power development program are covered, including materials development, corrosion, heat transfer, fluid dynamics, instrumentation, component development, physical properties, and power systems. Twelve reviews are included. (M.C.G.)
Date: February 1, 1963
Creator: Dwyer, O.E. ed.
Partner: UNT Libraries Government Documents Department


Description: Problems in fuel element development for the Rover program are discussed. Properties of refractory materials which remain solid above 2500 deg C are described. Tensile and compressive creep properties of graphite were deterndined. The compatibility of fuel element materials with the hydrogenous working fluid was also considered. The effect of composition on the properties of graphite is discussed. (M.C.G.)
Date: January 1, 1959
Creator: MacMillan, D.P.
Partner: UNT Libraries Government Documents Department

Creep behavior of tungsten/niobium and tungsten/niobium-1 percent zirconium composites

Description: The creep behavior and microstructural stability of tungsten fiber-reinforced niobium and niobium-1% zirconium was determined at 1400 and 1500{degree}K in order to assess the potential of this material for use in advanced space power systems. The creep behavior of the composite materials could be described a power law creep equation. A linear relationship was found to exist between the minimum creep rate of the composite and the inverse of the composite creep rupture life. The composite materials had an order of magnitude increase in stress to achieve 1 percent creep strain and in rupture strength at test temperatures of 1400 and 1500{degree}K compared to unreinforced material. The composite materials were also stronger than the unreinforced materials by an order of magnitude when density was taken into consideration. Results indicate significant potential improvement in high temperature properties and mass reduction for space power system components. 12 refs., 1 2 figs., 2 tabs.
Date: January 1, 1988
Creator: Petrasek, D.W. & Titran, R.H.
Partner: UNT Libraries Government Documents Department