Role of tribofilms in wear protection
| Autor: | Peter W. Jacobs, Alan Mark Schilowitz, Andrew R. Konicek, Martin N. Webster |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Materials science
Mechanical Engineering Metallurgy chemistry.chemical_element 02 engineering and technology Surfaces and Interfaces Zinc 021001 nanoscience & nanotechnology Chemical reaction Engine valve Surfaces Coatings and Films Reciprocating motion 020303 mechanical engineering & transports Inorganic phosphate 0203 mechanical engineering chemistry Mechanics of Materials Lubricant 0210 nano-technology Antiwear additive Tribometer |
| Zdroj: | Tribology International. 94:14-19 |
| ISSN: | 0301-679X |
| DOI: | 10.1016/j.triboint.2015.08.015 |
| Popis: | Engine valve train wear protection has been observed despite the absence of classical tribofilm formation. This was found with a lubricant containing zinc dialkyldithiophosphate (ZDDP), despite conventional understanding that ZDDP reduces wear by forming a thick, protective, inorganic phosphate tribofilm. We suggest that an antiwear additive can function by forming non-adherent triboproduct via a mechanically-stimulated chemical reaction. This triboproduct provides antiwear performance while entrained in the contact and is eventually expelled. In a reciprocating sliding tribometer it is observed as a pile of debris on the side of the contact. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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