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TECHNICAL PAPERS

Vapor-Phase Lubrication in Combined Rolling and Sliding Contacts: Modeling and Experimentation

[+] Author and Article Information
W. Gregory Sawyer, Thierry A. Blanchet

Department of Mechanical Engineering, Aeronautical Engineering and Mechanics, Rensselaer Polytechnic Institute, Troy, NY 12180

J. Tribol 123(3), 572-581 (Jul 06, 2000) (10 pages) doi:10.1115/1.1308039 History: Received January 27, 2000; Revised July 06, 2000
Copyright © 2001 by ASME
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References

Rao,  A. M. N., 1996, “Vapor Phase Lubrication: Application-Oriented Development,” Lubr. Eng., 52, pp. 856–862.
Forster,  N. H., and Trivedi,  H. K., 1997, “Rolling Contact Testing of Vapor-Phase Lubricants—Part II: System Performance Evaluation,” Tribol. Trans., 40, pp. 493–500.
Graham,  E. E., and Klaus,  E. E., 1986, “Lubrication from the Vapor-Phase at High Temperature,” ASLE Trans., 29, pp. 229–234.
Hanyaloglu,  B. F., Graham,  E. E., Oreskovic,  T., and Hajj,  C. J., 1995, “Vapor-Phase Lubrication of High Temperature Alloys,” Lubr. Eng., 51, pp. 503–509.
Lauer,  J. L., and Bunting,  B., 1988, “High Temperature Solid Lubrication by Catalytically Generated Carbon,” Tribol. Trans., 31, pp. 338–349.
Lauer,  J. L., and Dwyer,  S. R., 1991, “Tribochemical Lubrication of Ceramics by Carbonaceous Vapors,” Tribol. Trans., 34, pp. 521–528.
Lauer,  J. L., Blanchet,  T. A., Vlcek,  B. L., and Sargent,  B., 1993, “Lubrication of Si3N4 and Steel Rolling and Sliding Contacts by Deposits of Pyrolyzed Carbonaceous Gases,” Surf. Coat. Technol., 62, pp. 399–405.
Holmes,  D. M., Sawyer,  W. G., and Blanchet,  T. A., 2000, “Comparison of Various C2Hx for High-Temperature Lubrication by in situ Pyrolysis,” Lubr. Sci., 12, pp. 169–184.
Barnick,  N. J., Blanchet,  T. A., Sawyer,  W. G., and Gardner,  J. E., 1998, “High Temperature Lubrication of Various Ceramics and Metal Alloys via Directed Hydrocarbon Feed Gases,” Wear, 214, pp. 131–138.
Erdemir,  A., Fenske,  G. R., Erck,  R. A., Nichols,  F. A., and Busch,  D. E., 1991, “Tribological Properties of Boric Acid and Boric Acid-Forming Surfaces. Part II: Mechanisms of Formation and Self-Lubrication of Boric Acid Films on Boron- and Boric Oxide-Containing Surfaces,” Lubr. Eng., 47, pp. 179–184.
Blanchet,  T. A., Lauer,  J. L., Liew,  Y. F., Rhee,  S. J., and Sawyer,  W. G., 1994, “Solid Lubrication by Decomposition of Carbon Monoxide and Other Gases,” Surf. Coat. Technol., 68/69, pp. 446–452.
Sawyer,  W. G., Blanchet,  T. A., and Calabrese,  S. J., 1997, “Lubrication of Silicon Nitride in a Simulated Turbine Exhaust Gas Environment,” Tribol. Trans., 40, pp. 374–380.
Sawyer,  W. G., and Blanchet,  T. A., 1997, “High Temperature Lubrication of Combined Rolling/Sliding Contacts via Directed Hydrocarbon Gas Streams,” Wear, 211, pp. 247–253.
Sawyer, W. G., 1999, “Vapor-Phase Lubrication in Combined Rolling and Sliding Contacts: Modeling and Experimentation,” Ph.D. Thesis, Rensselaer Polytechnic Institute, Troy, NY; also Blanchet, T. A., and Sawyer, W. G., “Differential Application of Wear Models to Fractional Thin Films,” submitted for publication in Wear (Proceedings of the 13th International Conference on Wear of Materials, WoM2001).
Wedeven, L. D., and Totten, G. F., 1993, “Performance Map Characterization of Lubricating Oils—Characterization of Gear Lubricants Formulated from Different Base Oils,” SAE Technical Paper Series, paper number 932437.

Figures

Grahic Jump Location
Steady-state friction coefficient, taken from Fig. 4, versus acetylene partial pressure. The coefficient of determination for the model curve-fit R2=0.893 achieved using K=0.177*10−3 mm/N and ν=0.0988 kPa−1 s−1.
Grahic Jump Location
The friction coefficient responses to changing sliding speed in three tests of combined rolling and sliding contact with M50 steel specimens at 540°C, 0.05 atmospheres of acetylene, 2 m/s rolling speed, 100 N load, and a disk wear track diameter of 8.64 cm
Grahic Jump Location
(a) A generic two-body combined rolling and sliding contact. Lubricous islands are drawn dark on an otherwise bare (white) surface. (b) In the model, the annular wear paths are unwrapped and represented as linear wear tracks with a length equal to the circumference. The shading in on the bare surface in the removal zone is used to distinguish it from the region where deposition may occur.
Grahic Jump Location
A schematic of the WAM-1 combined rolling and sliding tribometer
Grahic Jump Location
The friction coefficient responses to changing acetylene partial pressures (noted) in a combined rolling and sliding contact with M50 steel specimens at 540°C, 2 m/s rolling speed, 10 cm/s sliding speed, 100 N load, and a disk wear track diameter of 8.64 cm
Grahic Jump Location
The friction coefficient responses to changing acetylene partial pressures (noted) in two tests of combined rolling and sliding contact with M50 steel specimens at 540°C, 2 m/s rolling speed, 20 cm/s sliding speed, 100 N load, and a disk wear track diameter of 8.64 cm
Grahic Jump Location
Normalized friction coefficient predictions as a function of the nondimensional rolling speed group over the range VR*=0.05-100 (a) VS*=0.1,Fn*=10, and varying ζD* (b) ζD*=1,Fn*=1, and varying VS* (c) ζD*=1,VS*=0.1, and varying Fn*
Grahic Jump Location
Normalized friction coefficient predictions as a function of the nondimensional load group over the range Fn*=0.01-10,000 (a) VS*=0.01,VR*=100, and varying ζD* (b) ζD*=1,VR*=100, and varying VS* (c) ζD*=1,VS*=0.001, and varying VR*
Grahic Jump Location
Contour plot of normalized friction coefficient for the pin-on-disk case as a function of the nondimensional deposition group D*=10−3−103 and load group Fn*=10−3−103
Grahic Jump Location
Steady-state friction coefficient, taken from Fig. 6, versus sliding speed. The coefficient of determination for the model curve-fit R2=0.714 achieved using K=0.33 mm/N and ν=85.5 kPa−1 s−1.
Grahic Jump Location
The friction coefficient responses to changing disk wear-track diameter (noted) in two tests of combined rolling and sliding contact with M50 steel specimens at 540°C, 0.05 atmospheres of acetylene, 10 cm/s sliding speed, 100 N load, and a constant disk rotational speed of 380 rpm. Acetylene partial pressure interrupted periodically, as noted by (0), to remove lubricant deposited during previous operating condition.
Grahic Jump Location
Steady-state friction coefficient, taken from Fig. 8, versus the disk wear track diameter. The coefficient of determination for the model curve-fit R2=0.0726 achieved using K =0.16 mm/N and ν=49.4 kPa−1s−1.
Grahic Jump Location
Normalized friction coefficient predictions as a function of the nondimensional deposition group over the range ζD*=0.001-10 (a) VR*=10,Fn*=10, and varying VS* (b) VS*=0.001,Fn*=10, and varying VR* (c) VS*=0.001,VR*=0.01, and varying Fn*
Grahic Jump Location
Normalized friction coefficient predictions as a function of the nondimensional sliding speed group over the range VS*=0.001-200 (a) VR*=100,Fn*=10, and varying ζD* (b) ζD*=1,Fn*=1, and varying VR* (c) ζD*=1,VR*=100, and varying Fn*

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