期刊
TRIBOLOGY LETTERS
卷 44, 期 1, 页码 19-30出版社
SPRINGER/PLENUM PUBLISHERS
DOI: 10.1007/s11249-011-9822-6
关键词
Anti-wear additives; Boundary lubrication; Wear; AES; XPS; TEM (EDS)
资金
- ANR [ANR-07-JCJC-0060]
- Agence Nationale de la Recherche (ANR) [ANR-07-JCJC-0060] Funding Source: Agence Nationale de la Recherche (ANR)
In this study, we are interested in the anti-wear properties of zinc dialkyl phosphate additive (ZP) in comparison with 'classical' zinc dialkyldithiophosphate (ZDDP). Friction tests were performed on a reciprocating tribometer using both ball-on-flat and cylinder-on-flat configurations under a Hertzian contact pressure of 0.9 GPa. Experiments were carried out as a function of temperature (25 and 100 A degrees C), sliding speed (25, 50 and 100 mm/s) and additives concentrations. Ball wear scar diameters as well as friction coefficient were measured. In order to better understand the anti-wear mechanisms of these additives, friction tests were followed by surface analyses such as AES (Auger Electron Spectroscopy) and XPS (X-Ray Photoelectron Spectroscopy). Transmission Electron Microscopy (TEM) observations of the ZDDP and ZP tribofilms were also carried out to visualise the generated layers. The anti-wear capability of ZP molecule is discussed.
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