Research on thermal transfer phenomena Final report, Jan. 1 - Dec. 31, 1965
Development of and thermoconductivity measurements for magnesium oxychloride stabilized zirconia foam insulating material
ZIRCONIUM OXIDE↗
SEARCH · Engineering Papers
Results for “zirconia”
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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Newly developed foam ceramic body shows promise as thermal insulation material at 3000 deg F
Optimized zirconia foam ceramic body shows promise for use as a thermal insulation material. The insulating media displays low density and thermal conductivity, good thermal shock resistance, high melting point, and mechanical strength.
Blocker, E. W.↗
Development of a system for prestressing brittle materials Final report
Tungsten cable for internal prestressing of chemically consolidated zirconia
PRESTRESSING↗
Summary of radiation effects on thermionic insulator materials
Radiation effects on thermionic insulator materials - evaluation of beryllia, alumina, thoria, zirconia, and yttria
Mayer, J. T.↗
Oxide deformation and fiber reinforcement in a tungsten metal oxide composite
Oxide deformation and fiber reinforcement in tungsten-urania and tungsten-zirconia elongated into fibers by hot extrusion
Blankenship, C. P.↗
Spacecraft rocket engine chamber insulation materials Interim report, 1 Jul. 1967 - 30 Jun. 1968
Spacecraft rocket engine chamber insulation materials - silica fabric/molybdenum foil layer, carbon fabric/tantalum foil, and fine tungsten powder in hollow zirconia microsphere matrix
Carlson, L. W.↗
Improved inorganic ion exchange membranes
New method makes solid ion exchange membrane electrolytes for use in hydrocarbon-oxygen and hydrogen-oxygen fuel cells. The membrane is a sintered composite of zirconia, phosphoric acid, and zeolite.
Arrance, F. C.↗
Development of a system for biaxial prestressing brittle materials
Strengthening zirconia with discontinuous tungsten graphite, sapphire, and silicon carbide fibers
Greszczuk, L. B.↗
Materials for Electrochemical Cell Separators
Chemical and electrochemical compatibility of fuel cell type asbestos, zirconia, and ceria for use in alkaline-electrolyte electrochemical cell separators
Vogt, J. W.↗
Heat-barrier coatings for combustion chambers
Arc-plasma-sprayed layered coating of graded Inconel and zirconia protects film-coolant ring below injector plate of rocket engine combustion chamber. Interfacial temperature is designed for minimum buildup of stress and to avoid melting of the metal phase in the graded layers.
Carpenter, H. W.↗
Simple bonding technique for high-temperature ceramic coatings
Coatings, consisting of zirconia powder bonded with orthophosphoric acid and a small amount of hydrofluoric acid, are hard, strong, and refractory, resist thermal shock, and provide good thermal protection. After the aqueous coating is applied to a metallic surface, only a 600 deg F cure is required before service.
Accountius, O. E.↗
Granular two-phase insulation systems
Easily prepared system, consisting of matrix of hollow zirconia microspheres containing dispersed tungsten powder, produces minimum-cost, prototype test specimen. Combination represents basic concept of highly reflective dispersed phase in low density insulative matrix and is stable at 2200 K. Other combinations of materials are suggested.
Carpenter, H. W.↗
Protective coating system for a regeneratively cooled thrust chamber Final report, 1 Feb. 1969 - 31 Dec. 1970
Protective coating of phosphate-bonded zirconia for regeneratively cooled thrust chambers
Carpenter, H. W.↗
Reusable external insulation TPS for the space shuttle
Reusable external fibrous insulation of silica, mullites, or zirconia for space shuttle thermal protection system
Florence, D. E.↗
Development and testing of ablative rocket engine with selected 7.62-centimeter /3.0 in/ diameter throat inserts
Development and testing of ablative rocket engine with selected 7.62 cm /3.0 in./ diameter throat inserts, and testing of zirconia reinforced with tungsten-rhenium wire for throat insert material
Pavli, A. J.↗
High-temperature ceramic-to-ceramic seals
Noble-metal braze applied to appropriately prepared zirconia parts produces a gas-tight, durable seal that can withstand temperature of 825 C for over 2000 hours without deterioration.
Smart, W.↗
Hydrogen plasma tests of some insulating coating systems for the nuclear rocket thrust chamber
Several plasma-sprayed and slurry-coated insulating coating systems were evaluated for structural stability in a low-pressure hot hydrogen environment at a maximum heat flux of 19.6 million watts/sq meter. The heat was provided by an electric-arc plasma generator. The coating systems consisted of a number of thin layers of metal oxides and/or metals. The materials included molybdenum, nichrome, tungsten, alumina, zirconia, and chromia. The study indicates potential usefulness in this environment for some coatings, and points up the need for improved coating application techniques.
Current, A. N.↗
A study of alternative methods for reclaiming oxygen from carbon dioxide and water by a solid-electrolyte process for spacecraft applications
Two alternative technical approaches were studied for application of an electrochemical process using a solid oxide electrolyte (zirconia stabilized by yttria or scandia) to oxygen reclamation from carbon dioxide and water, for spacecraft life support systems. Among the topics considered are the advisability of proceeding to engineering prototype development and fabrication of a full scale model for the system concept, the optimum choice of method or approach to be carried into prototype development, and the technical problem areas which exist.
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