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Results for “polycrystalline”

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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At least 217 records · Page 12

All sources NASA NTRS DOE OSTI

NASA NTRS1967

Effect of recrystallization on friction properties of some metals in single-crystal and polycrystalline form

Recrystallization effect on sliding friction of metals in single-crystal polycrystalline form

POLYCRYSTAL↗

NASA NTRS1967

Scattering of argon and nitrogen off polycrystalline nickel

Molecular collision investigation using molecular beam techniques to measure flux distribution and speeds of thermal energy particles scattered from polycrystalline nickel surfaces

MOLECULAR COLLISION↗

NASA NTRS1966

Electron and ion emission from polycrystalline surfaces of Nb, Mo, Ta, W, Re, Os, and Ir in cesium vapor.

Full temperature range electron and ion emission from polycrystalline surfaces of Nb, Mo, Ta, W, Re, Os and Ir in cesium vapor

ELECTRON EMISSION↗

NASA NTRS1966

Friction characteristics in vacuum of single and polycrystalline aluminum oxide in contact with themselves and with various metals.

Sliding friction characteristics in vacuum of single and polycrystalline aluminum oxide in contact and with various metals

VACUUM EFFECT↗

NASA NTRS1967

Friction characteristics in vacuum of single and polycrystalline aluminum oxide in contact with themselves and with various metals.

Sliding friction characteristics in vacuum of single and polycrystalline aluminum oxide in contact and with various metals

SLIDING FRICTION↗

NASA NTRS1967

The effect of grain boundaries on mechanical behavior in polycrystalline ceramics

Atomic structure and chemical composition influence on grain boundaries effect on mechanical failure in polycrystalline ceramics

De Wys, E. C.↗

NASA NTRS1967

Effect of fluorine and oxygen on the work function of polycrystalline tungsten

Fluorine and oxygen effects on work function of polycrystalline tungsten

Bergman, J. G.↗

NASA NTRS1968

Effect of 10 sup 20 neutron per square centimeter irradiation on embrittlement of polycrystalline tungsten

Neutron irradiation effects on embrittlement of polycrystalline tungsten

Wrights, G. N.↗

NASA NTRS1968

Emitter and collector sheaths for cesium thermionic diodes with polycrystalline tungsten electrodes

Morris, J. F.↗

NASA NTRS1968

Interaction of cracks with microstructure in polycrystalline ceramics Semiannual progress report

Monitoring stresses and detailed path by crack propagating in polycrystalline ceramic

Leipold, M. H.↗

NASA NTRS1968

Some effects of oxygen on the tensile deformation of polycrystalline zirconium.

Oxygen concentration effects on polycrystalline Zr subject to tensile deformation at various temperatures noting yield stress, activation energy and twinning

Baldwin, D. H.↗

NASA NTRS1968

Low temperature far-infrared transmission properties of polycrystalline and single- crystal silicon.

Far Ir transmission properties of polycrystalline and single crystal silicon at low temperatures, using spectrophotometer data recording

Baglin, F. G.↗

NASA NTRS1968

Adsorption studies based on thermionic emission measurements. III - Oxygen on polycrystalline W, Mo, Ta, and Re.

Adsorption and desorption of oxygen on polycrystalline W, Mo, Ta and Re filaments, using thermionic emission measurements

Greaves, W.↗

NASA NTRS1969

Preferred-orientation analysis of polycrystalline materials

Automatic device built around a goniometer examines characteristics of polycrystalline materials and determines preferred orientations of crystallites. It is automatically rotatable in each of two planes and has circuit regulated sequential rotation. A fixed X ray source in conjunction with a detector examines the material.

De Wys, E. C.↗

NASA NTRS1968