Friction at High Sliding Velocities of Surfaces Lubricated with Sulfur as an Additive
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SULPHUR↗
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Results for “Lubricants”
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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Aeration of aircraft lubricating oils over a range of temperature
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LUBRICATING OILS - AERATION↗
Review of emulsified antifoams for aircraft lubricating oils
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LUBRICATING OIL COMPOUNDS↗
Comparative foaming characteristics of aeronautical lubricating oils
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BUBBLES↗
Performance Characteristics of Journal Bearings with Forced-feed Lubrication
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TESTING MACHINES, LUBRICATION-NAT BUR STDS↗
Persistence of Structural Lubricity on Contaminated Graphite: Rejuvenation, Aging, and Friction Switches
Not Available
77 NANOSCIENCE AND NANOTECHNOLOGY↗
2013 VTO Annual Merit Review Presentations Fuel and Lubricant [Slides]
Abstract not provided.
10 SYNTHETIC FUELS↗
Research on materials for gas-lubricated gyro bearings Technical summary report, 1 Dec. 1965 - 31 Aug. 1966
Ceramics tested for use in hydrodynamic gyroscope gas bearings
GAS LUBRICATED BEARING↗
Variation with temperature of surface tension of lubricating oils
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SURFACE TENSION↗
The hydrodynamic lubrication of near-infinite sliders such as piston rings
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PRESSURE DISTRIBUTION - PISTON RINGS↗
Determination of iron contamination of used lubricating oil for use in measuring rates of wear in aircraft engines
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LUBRICATING OILS - IRON CONTAMINATION↗
Industrial Demand and Applications for Solid Film Lubricant
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coatings lubricant thin films↗
Biodegradable Lubricant from Esterified Propoxylated Glycerol (Final Report)
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13 HYDRO ENERGY↗
Stress- and Time-Dependent Formation of Self-Lubricating In Situ Carbon (SLIC) Films on Catalytically-Active Noble Alloys
Abstract Low shear strength (30 MPa) organic films were grown in situ on Pt 0.9 Au 0.1 surfaces via cyclic sliding contact in dry N 2 with trace concentrations of ambient hydrocarbons. We present a systematic investigation of the stress- and time-dependent film formation. Steady-state friction coefficients were found to be as low as µ ~ 0.015 and inversely proportional to contact pressure, revealing non-Amontonian behavior. Above a Hertzian contact pressure of ~500 MPa, shear strength dropped, indicating an activated process. Raman spectroscopy identified non-uniformity in areal coverage and relative order with contact pressure. Regions of steady-state low-friction behavior exhibited spectra similar to DLC coatings. Atomic force microscopy was used to study the formation and growth of films at the nanoscale. Stress- and time-dependent measurements suggested a sublinear increase of film volume with time, and a transition from growth to wear at a Hertzian contact pressure of ~1.2 GPa.
Jones, Morgan R.↗