The most common positive effect in the boundary friction between surfaces with a partially regular microrelief can be explained in relation to the lubrication conditions improved by increasing oil absorption (Schneider 1982, 1998, 2001).
The thickness of the lubricant film is determined by a few monolayers, and the friction mode is intermediate between boundary friction and friction without the lubricant.
b) Where boundary lubrication cannot be avoided, boundary friction
should be reduced as much as possible through the use of lubricant additives or other methods, such as low friction coatings.
Its computation for mixed and boundary friction should be based on experimental results.
However, for mixed and especially boundary friction mentioned computation method don't applied.
This difference between the two curves (theoretical and experimental) can be exploited in two directions: the prediction of contact under the conditions of mixed or even boundary mode and also the determination of the rate and positions of wear, knowing as the zones of mixed and boundary friction are exposed to the wear and that the rate (percentage) of boundary mode (and mixed) in contact is representative of the wear rate .
147 boundary friction coefficient friction coefficient [mu] Table 3 Values of Ft after 2min and 8h from the test Coating C A F E D B F, (Mean) After 4.
Wet but not slippery: boundary friction
in tree frog adhesive toe pads [J].
is common in lightly lubricated, slow-moving devices, and is often what we think of as everyday lubrication: The base materials still contact each other, but the effects are mitigated by the lubricant's presence.
The biphasic boundary friction
model proposed in [14-16] quantifies the load sharing between the solid and fluid phases of the porous-permeable cartilage at the contact interface.
His work helped to determine the proportions of hydrodynamic friction and boundary friction
in the engine.
So we get a case when decreased losses of hydrodynamic friction are partially compensated by the increased losses of boundary friction