التفاصيل البيبلوغرافية
| العنوان: |
Friction reduction efficiency of organic Mo-containing FM additives associated to ZDDP for steel and carbon-based contacts. |
| المؤلفون: |
Gorbatchev, O.1, Bouchet, M.I. De Barros1, Martin, J.M.1, Léonard, D.2, Le-Mogne, T.1, Iovine, R.3, Thiebaut, B.3, Héau, C.4 |
| المصدر: |
Tribology International. Jul2016, Vol. 99, p278-288. 11p. |
| مصطلحات موضوعية: |
*FRICTION, *ADDITIVES, *THIOPHOSPHATES, *STEEL, *ORGANOMOLYBDENUM compounds, *COATING processes, *CARBON |
| مستخلص: |
The lubricating properties of two different organomolybdenum additives combined with ZDDP were evaluated for different tribopairs involving carbon-based coatings, hydrogenated DLC and nanocrystalline diamond NCD. Their performances were investigated using reciprocating linear tribometer and compared with the traditional additivation MoDTC/ZDDP. The highly sulfurised moly-trimer additive and organic molybdate ester additive displayed good friction reducing properties in comparison with traditional additivation MoDTC for all tribopairs tested, especially organic molybdate ester. XPS and ToF-SIMS surface analyses performed on the tribofilms formed with these different organomolybdenum additives showed the formation of MoS 2 /MoS 2− x O x species exhibiting a solid lubricant character, but preferentially on steel surfaces. HRTEM/EDS analyses confirmed the presence of MoS 2 /MoS 2− x O x sheets embedded inside an oxygen-rich amorphous matrix. This is different from the traditional additivation that leads to the polyphosphate/phosphate glass matrix. Organic molybdate ester is a sulfur- and phosphorus-free additive that appears particularly interesting for achieving low friction while minimizing the S content of the lubricant. [ABSTRACT FROM AUTHOR] |
| قاعدة البيانات: |
Academic Search Index |
