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Aircraft Propulsion Lubricating Film Additives: Boundary Lubricant Surface Films.
Phase rept. 1 Dec 73-30 Nov 74,
BATTELLE COLUMBUS LABS OHIO
Pagination or Media Count:
The purpose of this investigation is the development of an adequate understanding of boundary lubricant films so as to permit the systematic design and formulation of new boundary lubricant-fluid systems. If a given fatty acid is added to a group of hydrocarbon solvents of various chain lengths, the boundary lubricating character is different, thereby suggesting strongly that the solvent is entering into the formation of a boundary lubricant film. Because much is known about straight-chain hydrocarbon solvents and fatty acid additives, these were selected for determining the validity of the proposed model. As the surface films of interest are considered to be liquid crystal-like, the use of polarized radiation was considered practicable. Actually, the technique selected is frustrated-multiple-internal-reflection FMIR spectroscopy. The results of the experimental research on molecular ordering of surface films and their thermal and mechanical properties are presented in the following sections. A resume of the theoretical research and analytical methodology is also presented.
APPROVED FOR PUBLIC RELEASE