Aircraft propulsion lubricating film additives: boundary lubricant surface films
Aircraft propulsion lubricating film additives: boundary lubricant surface films
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- New search for: Dranglis, E.
- New search for: Glaeser, W.A.
The report summarizes the research prior to that described in Volume III and presents the results of the most recent research in some detail. This covers a broadspectrum of data on a sensitive stick-slip friction apparatus; the detection of molecular order and orientation in quiescently formed solution films using frustrated-multiple-internal-reflection infrared spectroscopy (FMIR), and in the determination of the thermodynamic properties of selected film species using ellipsometric techniques. Experiments were performed on rubbed stearic acid films on three substrates - iron, chromium and copper. Using carefully controlled surface contact conditions, very pure iron and chromium substrates were used to form surface films from straight-chain hydrocarbon solutions and ester-commercial additive systems. The mechanical properties - frictin, shear stress and damping - were studied utilizing films formed in situ. This is also true for the measurement of thermodynamic properties though no dynamic rubbing contact was involved in the ellipsometric determinations.
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Aircraft propulsion lubricating film additives: boundary lubricant surface films
Additive fuer Schmierfilme von Flugzeugmotoren: Oberflaechenschmierfilme
US Government Reports ; 1-119
1976
119 Seiten
Report
English
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