Aircraft Propulsion Lubricating Film Additives: Boundary Lubricant Surface Films. Volume I.
Abstract
The hypothesis under study is that boundary films possess properties significantly different from those of bulk fluids because of the presence of molecular interacting forces which tend to produce ordered, molecularly oriented, multilayered, relatively thick (5000 A) surface films. Experimental research on the detection of ordering is being carried out by means of frustrated-multiple-internal-reflection, infrared spectroscopy while the thermal properties, including heats of sorption, are being conducted on a very sensitive mass-spectrometric molecular-effusion instrument. The friction, shear stress, and damping behavior of the surface films are being studied with a stick-slip friction apparatus. The whole is being supported by theoretical analysis with a view to developing a mathematical model for application to the development of practical boundary lubricants for aircraft propulsion systems. The subject report is the first of three, and it is devoted to investigations of straight-chain hydrocarbon solvent/solute systems using the techniques just described. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1974
- Accession Number
- AD0777590
Entities
People
- C. A. Alexander
- C. M. Allen
- E. Drauglis
- R. J. Jakobsen
- W. A. Glaeser
Organizations
- Battelle Memorial Institute