Lubricant's Properties under High Pressure and Tribology.

HIGH PRESSURE BEHAVIOR OF KCl: STRUCTURAL AND ELECTRONIC PROPERTIES

The high pressure behavior of the structural and electronic properties of KC1 is studied with use of the density functional pseudopotential method within local-density approximation. Atzero pressure, the rocksalt phase is found to be lower in energy than CsCl structure. However, we predict a phase transition into CsCI structure at a pressure of about 1.5 GPa. The calculated ground state pro...

High performance under pressure.

Nanomaterials under high-pressure.

The use of high-pressure for the study and elaboration of homogeneous nanostructures is critically reviewed. Size effects, the interaction between nanostructures and guest species or the interaction of the nanosystem with the pressure transmitting medium are emphasized. Phase diagrams and the possibilities opened by the combination of pressure and temperature for the elaboration of new nanomate...

Stuctural and Dynamic Properties of Hexadecane Lubricants under Shear Flow in a Connned Geometry

Using shear dynamics simulations we investigated the structure and dynamics of hexadecane (n-C 16 H 34) lubricant lms connned between two solid surfaces (Fe 2 O 3) covered with a self-assembled monolayer of wear inhibitors dithiophosphate molecules DTP = S 2 P(OR) 2 with R = iPr, iBu, and Ph]. We found signiicant density oscillations in the lubricant lms, especially near the top and bottom boun...

Breathing under high ambient pressure.

LORD, GEORGE P., GEORGE F. BOND, AND KARL E. SCHAEFER. Breathing under high ambient pressure. J. Appl. Physiol. 21 (6): 1833-1838. 1966.—The acute effect of high ambient pressure on expiratory airflow was studied in healthy adult males in the ambient pressure range from 1.0 to 7.0 atmospheres absolute pressure (Ata) using a hyperbaric chamber. Changes in flow were assessed with the maximum expi...