This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Performance of Amorphous Carbon Coating in Turbocompressor Air Bearings
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 03, 2002 by SAE International in United States
Annotation ability available
Event: Future Car Congress
The U.S. Department of Energy has a program to develop fuel cell technology for automotive applications. For maximum efficiency, a fuel cell system requires a compact, light-weight, and highly efficient air compressor to provide a stream of clean air to the fuel cell stack. Meruit, Inc., is developing a turbocompressor for this application. Journal and thrust air bearings are two critical components of the turbocompressor that require low friction and excellent wear resistance. These components were coated with Argonne's new low-friction amorphous carbon coating and tested in an air bearing test rig. Results to date show that the coating provides the required friction reduction, as indicated by reduction in time to lift-off of the radial journal bearing during cyclic start/stop testing. The coating also prevented wall climbing which can cause bearing instability. In spite of a slight imbalance in the coated test bearing, wear on the coated surface, which occurred by polishing and mild abrasion, was at an acceptable level.
|Journal Article||SKF Contributes to Climate Change Mitigation with Friction Optimized Wheel Bearings|
|Technical Paper||Slinger Design in Live 4WD Axle for Tractor|
|Technical Paper||New Polymeric Coated Engine Bearings for Marginal Lubrication Conditions|
CitationAjayi, O., Woodford, J., Erdemir, A., and Fenske, G., "Performance of Amorphous Carbon Coating in Turbocompressor Air Bearings," SAE Technical Paper 2002-01-1922, 2002, https://doi.org/10.4271/2002-01-1922.
- DOE Report “Air System Technology Programs Peer Review: Fuel Cell Compressor/Expander/Motor (CEM) Preliminary Findings” March 2001
- Fonda-Bonardi G. “Gas Bearing for High-Speed Turbomachinery,” July 1998 ASME Fluids Engineering Conference Washington, DC
- Fonda-Bonardi G. “Electrically Boosted Gas Bearing Turbocompressor,” Report DOE PRDA DE-FC02-97EE-50480 June 15 1999
- Ajayi O. O. Fesnke G. R. Erdemir A. Woodford J. Sitts J. Elshot K. Griffey K. “Low-Friction Coatings for Air Bearings in Fuel Cell Air Compressors,” SAE Technical Paper # 2000-01-1536 2000
- Alzoubi M. F. Ajayi O. O. Woodford J. B. Erdemir A. Fenske G. R. “Scuffing Performance of Amorphous Carbon during Dry-Sliding Contact,” STLE Trib. Trans. 44 2001 591 596
- Erdemir A. Fenske G. R. Terry J. Wilbur P. “Effect of Source Gas and Deposition Method on Friction and Wear Performance of Diamondlike Carbon Films,” Surface and Coatings Technology 94-95 1997 525 530
- Erdemir A. Eryilmaz O. L. Fenske G. “Synthesis of Diamondlike Carbon Films with Superlow Friction and Wear Properties,” J. Vac. Sci. Technol. A18 2000 1987 1992
- CSEM Calotest User guide Neuchatel, (Switzerland) 1998
- Fonda-Bonardi G. “Meruit Turbocompressor PRDA Task 1: Gas Bearing Validation,” Report DOE PRDA DE-FC02-97EE-50480 July 10 2001