High operating speeds and temperatures required for advanced turbomachinery necessitate the development of bearings capable of continuous operation between 3 and 4 million DN at temperatures up to 820°C. Non-contact oil-free bearings such as compliant foil bearings, active magnetic bearings and hybrid foil/magnetic bearings are alternate solutions to the current liquid-lubricated hydrodynamic and rolling element bearings, with limited life under these extreme conditions. A critical component in these oil-free bearings is the tribological coating system that must be used on the journal and the foil pads to ensure reliable operation during transient periods and start-stop cycles. The purpose of the present investigation was to assess the reliability of tribological coatings for a large (150 mm diameter) hybrid foil/magnetic bearing.
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STLE/ASME 2006 International Joint Tribology Conference
October 23–25, 2006
San Antonio, Texas, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4259-2
PROCEEDINGS PAPER
Evaluation of Coatings for a Large Hybrid Foil/Magnetic Bearing
Hooshang Heshmat,
Hooshang Heshmat
Mohawk Innovative Technology, Inc., Albany, NY
Search for other works by this author on:
Said Jahanmir
Said Jahanmir
Mohawk Innovative Technology, Inc., Albany, NY
Search for other works by this author on:
Hooshang Heshmat
Mohawk Innovative Technology, Inc., Albany, NY
Said Jahanmir
Mohawk Innovative Technology, Inc., Albany, NY
Paper No:
IJTC2006-12328, pp. 1361-1362; 2 pages
Published Online:
October 2, 2008
Citation
Heshmat, H, & Jahanmir, S. "Evaluation of Coatings for a Large Hybrid Foil/Magnetic Bearing." Proceedings of the STLE/ASME 2006 International Joint Tribology Conference. Part B: Magnetic Storage Tribology; Manufacturing/Metalworking Tribology; Nanotribology; Engineered Surfaces; Biotribology; Emerging Technologies; Special Symposia on Contact Mechanics; Special Symposium on Nanotribology. San Antonio, Texas, USA. October 23–25, 2006. pp. 1361-1362. ASME. https://doi.org/10.1115/IJTC2006-12328
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