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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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Thin film thermistors heat-separated from graphite substrate to achieve positive temperature resistance coefficient via argon heating and oxygen cooling
Temperature dependence of equilibrium solid solubility of C in Au, Cu and Ag foils with respect to graphite
Strengthening of chemically consolidated zirconia with tungsten fibers, graphite fibers, sapphire whiskers, and silicon carbide whiskers is investigated. Addition of silicon carbide whiskers gives the highest increase in strength of zirconia at room and elevated temperatures. Prestressing with tungsten cables increases tensile strength and ductility
Metal lined boron and graphite composites exhibit high strength and minimum weight, making them superior to aluminum cylindrical shell structures and to steel or aluminum constructed pressure vessels. S glass filament-epoxy resin matrix with aluminum liner is suitable for cryogenic tanks.
Shock wave transmitted through a solid exponential horn generates heat and pressure to convert part of a charge of graphite to diamonds. The shock wave is generated in the apparatus by a complex of magnetic fields and eddy currents.
Refractory metal and graphite composite research for solid propellant rocket nozzle applications
Design and test program of FLOX methane thrust chamber assembly using ablative chamber and graphite throat insert
Ablation chars, carbon and graphite spectral emittance and reflectance as function of wavelength and temperature, noting applications to atmospheric entry heat shielding
Quasi-equilibrium treatment of heterogeneous reactions applied to evaporation rate /desorption/ computation for volatile species formed in oxygen reactions with W, Mo and graphite
Thermal conductivity determination for charring materials by dynamic technique, with application to carbon, graphite and silica cloth phenolics
UV interstellar extinction from comparison of epsilon and zeta Persei, noting graphite features
Quartz- and silicate-graphite mixtures carbothermal reduction in vacuum at 1400 C
Ni-Cu-C solid solutions, measuring temperature dependence of graphite solubility by vapor transport method
Cool star atmospheric structure, discussing models with and without graphite particle inclusion opacity
Porous material thoroughly wetted with alcohol shows persistent wet line or area at locations of cracks or porosity. Inspection is qualitative and repeatable, but is used quantitatively with select samples to grade density variations in graphite blocks. Photography is employed to achieve permanent record of results.
Ceramic coating, consisting of graphite, enameler's clay, and algin binder, applied to materials prior to salt bath brazing facilitates brazing process and results in superior joints. Alternate coating materials and their various proportions are given.
Bibliography on emittance of high temperature materials including refractory materials, ceramics, carbon, graphites, chars, and ablative materials for use in aerospace engineering
Flame or plasma spraying for molybdenum coating of carbon or graphite surfaces to prevent oxidative corrosion