Abstract
The effectiveness of two graphite-based and one MoS2-based solid lubricants subjected to high creepages were experimentally assessed. This research correlated the evolution of coefficient of traction (CoT) to in-depth wear surface morphology and microstructure. The lubricating potential of these solid lubricants to reduce wear and thereby extend the operation life of rail components was comprehensively evaluated. The graphite-based lubricants were able to reduce the CoT and improve the wear resistance considerably. Furthermore, the graphite-based lubricant with lower carbon content was found to be effective at all tested conditions, offering 30%–55% reduction in CoTs, longer retentivity, and better surface morphology. However, the MoS2-based lubricant did not offer significant reduction in the CoT and resulted in substantial abrasive wear at higher creepages.
Original language | English |
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Article number | 106886 |
Number of pages | 16 |
Journal | Tribology International |
Volume | 157 |
DOIs | |
Publication status | Published - May 2021 |
Keywords
- Solid lubricant
- Wear mechanism
- Wear rate
- Wheel-rail contact
Equipment
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Centre for Electron Microscopy (MCEM)
Flame Sorrell (Manager) & Peter Miller (Manager)
Office of the Vice-Provost (Research and Research Infrastructure)Facility/equipment: Facility