Zeitschriftenartikel:
A. Naveira-Suarez, A. Tomala, R. Pasaribu, R. Larsson, I. Gebeshuber:
"Evolution of ZDDP-Derived Reaction Layer Morphology With Rubbing Time";
Scanning,
32
(2010),
5;
S. 294
- 303.
Kurzfassung englisch:
Functional additives, particularly
extreme pressure and antiwear additives, in formulated
oil will compete to adsorb and function in
tribological contacts. A low-polarity commercial
base oil, poly-a-olefin (PAO), blended with zinc
dialkyl dithiophosphates (ZDDP) has been studied.
The tribological performance was evaluated using
a ball-on-disk test rig under mixed rolling-sliding
conditions in the boundary lubrication regime at
901C. An adapted in situ interferometry technique
was used to monitor the additive-derived reaction
layer formation. The thickness of the reaction layer
evolves with rubbing until reaching a limiting
thickness value of approximately 70 nm. The evolution
of the topography and mechanical properties
of the ZDDP-derived reaction layer with
rubbing time were studied using Atomic Force
Microscopy. A constant roughening and hardening
of the additive-derived layer with rubbing time is
observed and related to the different tribological
performance of the layer at different rubbing
times.
Schlagworte:
additives, AFM, atomic force microscopy, boundary layers formation, boundary lubrication, morphology, nanowear, reaction layer, ZDDP
Erstellt aus der Publikationsdatenbank der Technischen Universität Wien.