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Mechanism Studies with Special Boundary Lubricant Chemistry
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Abstract
A mechanism was proposed in SAE Paper #941983, (October, 1994) to explain why “Unique Boundary Chemistry” (UBC) described in said paper (1) required an extended conditioning period for its full antiwear benefits to be realized and (2) why the UBC Chemistry produced a strong antiwear carryover effect, even after relatively short exposure to the engine. This paper will document and discuss results from several metal surface studies employing a variety of metal surface analysis techniques (XPS, Profilometry, and AFM) to support various aspects of the earlier proposed antiwear mechanism. These surface analysis studies were carried out with pertinent boundary lubricated parts from (a) bench tests, (b) engines tested under modified protocol Sequence IIIE conditions described in SAE Paper 941983 and (c) standard ASTM Sequence IIIE and VE tests exposed to the UBC Chemistry.
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Citation
Shaub, H., Pandosh, J., Searle, A., and Sprague, S., "Mechanism Studies with Special Boundary Lubricant Chemistry," SAE Technical Paper 952475, 1995, https://doi.org/10.4271/952475.Also In
References
- Shaub H. Pandosh J. Searle A. Sprague S. Treuhaft M. “Engine Durability, Emissions and Fuel Economy Studies with Special Boundary Lubricant Chemistry,” SAE Paper 941983 October 1994
- Kong H. S. Ashby M. F. “Friction-Heating Maps and Their Applications,” MRS Bulletin October 1991 41 47
- Erdemir A. Nichols F. A. Fenski G. R. Hsieh J.J. “Sliding Friction and Wear of Ceramics With and Without Soft Metallic Films,” MRS Bulletin October 1991 49 53
- Fusaro R. L. “Lubrication of Space Systems,” Lubrication Engineering 51 3 March 1995 188
- Cao L. L. Sun Y. M. Zheng L. Q. “Chemical Structure Characterization of the Boundary Lubrication Film Using X-Ray Photoelectron Spectroscopy and Scanning Auger Microprobe Techniques,” Wear 140 1990 345 357
- Cavdar B. Sharma S. K. Gschwender L. J. “Wear Reducing Surface Films Formed by a Fluorinated Sulfonamide Additive in a Chlorotrifluoroethylene-Based Fluid,” Lubrication Engineering 50 11 November 1994 895 902
- Evans East “Chemical State Mapping By XPS,” Applications Note May 1994 Evans East 666 Plainsboro Road, Suite 1236, Plainsboro, NJ
- ASM Handbook “Surface Engineering,” 5 ASM International 1994 959
- Thomas T.R. “Rough Surfaces” Longman Inc. New York 1982
- Goldblatt I. L. “The Use of Simulant Devices to Evaluate the Wear Performance of Multigraded Engine Oils,” SAE Paper 770376 1977
- Waddery W. E. Shaub H. Pecoraro J. M. Carley R. A. “Improved Fuel Economy Via Engine Oils,” SAE Paper 780599 June 1978
- Charles Evans and Associates “Atomic Force Microscopy (AFM). Capabilities of the Digital Instruments Nano Scope® III,” November 1994 Charles Evans and Associates 331 Chesapeake Drive, Redwood City, CA
- ASM Handbook “Surface Engineering,” 5 ASM International 1994 954
- Pen Kem System 3000 Automated Electrokenetics Analyzer 1 Operation & Maintenance Manual 1985 Pen Kem Inc.
- Dilks A. Brundle C. R. Baker A. D. Electron Spectroscopy Theory, Technique and Applications 4 Academic Press New York 1981 278 356
- Briggs D. Briggs D. Seah M. P. Practical Surface Analysis by Auger and X-ray Photoelectron Spectroscopy Wiley New York 1983 374 377
- McGeehan J. A. Yamoguichi E. S. Adams J. Q. “Some Effects of Zinc Dithiophosphates and Detergents on Controlling Engine Wear,” SAE Paper 852133 1985
- Sioshansi P. “Surface Modification by Ion Implantation,” Machine Design March 20 1986 61 65
- Deutchman A. H. Partyka R. J. “Practical Applications of Ion Beam Mixing: A New Surface Treatment Technique,” Industrial Heating February 1988 30 31
- ASTM D664-89 “Standard Test Method for Acid Number of Petroleum Products by Potentiometric