Development of a composite friction modifier with carbon nanotubes for applications at the wheel–rail interface
| Autor: | Jesús Antonio Carlos Cornelio, Juan Camilo Vélez, J.F. Santa, Roman Nevshupa, Robinson Buitrago Sierra, Lina Marcela Hoyos-Palacio, Alejandro Toro |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Interface (computing) Composite number Carbon nanotubes Friction modifier Railway transportation Composite friction modifiers 02 engineering and technology Carbon nanotube 021001 nanoscience & nanotechnology law.invention Psychiatry and Mental health 020303 mechanical engineering & transports Neuropsychology and Physiological Psychology 0203 mechanical engineering Wheel–rail contact law lcsh:TA401-492 lcsh:Materials of engineering and construction. Mechanics of materials Composite material 0210 nano-technology Dry lubricant |
| Zdroj: | Advanced Composites Letters, Vol 29 (2020) Digital.CSIC. Repositorio Institucional del CSIC instname |
| ISSN: | 0963-6935 |
| Popis: | Wear of wheels and rails is a major problem in railway transportation industry. Solid lubricants constitute a cost-efficient alternative to control wear and friction at the wheel–rail interface, especially when a fine-tuned balance between traction force and energy consumption is sought. In this work, composite friction modifiers (CFMs) composed of a vinyl ester matrix reinforced with molybdenum disulfide and carbon nanotubes were developed. The total solid additive content was less than a half in comparison with a commercial product available on the market, which was used as a reference. A benchmarking study of the CFM was carried out by means of tribological tests in a twin-disc machine at a contact pressure of 1.1 GPa and different slip values. The results indicated that the developed CFM reduce coefficient of traction by 10% compared to unlubricated conditions that is similar to the reference. However, the total mass loss of steel components due to wear under CFM lubrication was lower than in the reference test. |
| Databáze: | OpenAIRE |
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