Phosphorus Reduction in Plain and Fully Formulated Oils Using Fluorinated Additives
Abstract:The reduction of phosphorus and sulfur in engine oil
are the main topics of this paper. Very reproducible boundary
lubrication tests were conducted as part of Design of Experiment
software (DOE) to study the behavior of fluorinated catalyst iron
fluoride (FeF3), and polutetrafluoroethylene or Teflon (PTFE) in
developing environmentally friendly (reduced P and S) anti-wear
additives for future engine oil formulations. Multi-component
Chevron fully formulated oil (GF3) and Chevron plain oil were used
with the addition of PTFE and catalyst to characterize and analyze
their performance. Lower phosphorus blends were the goal of the
model solution. Experiments indicated that new sub-micron FeF3
catalyst played an important role in preventing breakdown of the
 Elsenbaumer, R. L., Aswath, P. B., Nehme, G. (2003), "High
Performance Lubricants and Coatings by Catalyzed PTFE Modification
of the Metal Surfaces", University of Texas at Arlington and Platinum
Research Cooperation in European Coating Conference: Smart Coatings
II Berlin Germany: Vincentz Verlag KG. pp. 1-10.
 Nehme, G. N. (2010), "Interaction of Fluorinated catalyst with plain
ZDDP oil and commercial oil using 2 rpm cycles testing and DOE
analysis under extreme boundary lubrication", STLE 2010- 41044,
STLE/ASME International joint Tribology Conference, STLE, San
 Nehme, G. N., and Dib, M. (2010), "Optimization of Mechanism of
Boundary Lubrication in Fully Formulated Commercial Engine Oil
Using Design of Experiment", Tribology Transactions, 54, 2, pp.208-
 Nehme, G. (2011), "The Tribological Performance of Plain and Fully
Formulated Commercial Engine Oil under 2 Different Rotational Speeds
and Extreme Pressure Contact Using Design of Experiment", Tribology
Transactions 54,4, pp. 568-588.
 B.A. Khorramian, G.R. Iyer, S. Kodali, P. Natarajan, R. Tupil, “Review
of antiwear additives for crankcase oils”, Wear, 169 (1), (1993), 87-95.
 Nehme, G. N. (2011), "Interactions of fluorinated catalyst and
polutetrafluoroethylene in two different plain zinc
dialkyldithiophosphate oils and one fully formulated oil using design of
experiment", Lubrication Science, 23, 4, pp.181-201.
 Nehme, G. N. (2011), "Fluorinated FeF3 catalyst interactions in three
different oil formulations using design of experiment optimization and
chemistry characterization of tribofilms", Lubrication Science, 23, 4,
June 2011, Pages: 153-179.
 Nehme, G. N., Dib, M. (2011), "Fluorinated mix in plain ZDDP oil and
commercial oil using design of experiment analysis of all interactions
and fundamental study of fluorinated mix in plain ZDDP oils under 2
different r/min test cycles and extreme boundary lubrication",
Proceedings of the Institution of Mechanical Engineers, Part J: Journal
of Engineering Tribology, 225, 4, pp. 193-211.
 Nehme, G. N. (2012), "The Effect of FeF3/TiF3 catalysts on the Thermal
and Tribological performance of Plain Oil ZDDP under Extreme
Pressure Loading", Wear, 278-279, pp. 9-17.
 Oliver W.C., and Pharr, G.M. (1992), "An improved technique for
determining hardness and elastic modulus using load displacement
sensing indentation experiments", J. Mater. Res. 7, pp. 1564-1583.
 P.A. Willermet, D.P. Dailey, R.O. Carter III, P.J. Schmitz and W. Zhu.
“Mechanism of formation of antiwear films from zinc
dialkyldithiophosphate” Tribology International, 28(3), (1995), pp. 177-
 J-M Martin, C. Grossiord, T. LeMogne and J. Igarashi, “Transfer films
and friction under boundary lubrication”, Wear, 245 (2000), pp. 107-
 G.C. Smith and J.C. Bell, “Multi-technique surface analytical studies of
automotive anti-wear films” Appl. Surface Science, 144-145 (1999), p.