Statistical theory of the boundary friction of atomically flat solid surfaces in the presence of a lubricant layer

2012 ◽  
Vol 182 (10) ◽  
pp. 1081-1110 ◽  
Author(s):  
Aksei V. Khomenko ◽  
I.A. Lyashenko
Keyword(s):  
Statistical Theory ◽  
Solid Surfaces ◽  
Boundary Friction ◽  
Lubricant Layer ◽  
Atomically Flat

NANOSCALE EFFECTS OF SURFACES AND LUBRICANTS ON FRICTION

2006 ◽  
Vol 13 (02n03) ◽  
pp. 235-240 ◽  
Author(s):  
TAKAAKI KAWAGUCHI ◽  
HIROSHI MATSUKAWA
Keyword(s):  
Phase Transition ◽  
Interaction Potential ◽  
Frictional Force ◽  
Lattice Model ◽  
Solid Surfaces ◽  
Lubricant Layer ◽  
Scaling Relation ◽  
Pinning Mechanism

Nanoscale frictional phenomena at solid–solid surfaces with lubricants are studied numerically using a lattice model which consists of two rigid substrates and a monolayer of lubricant molecules. The maximum static frictional force, which works on the driven upper solid, is always finite and obeys a certain scaling relation. The lubricant layer, however, shows a kind of phase transition from a pinned state to free sliding state when the strength of the interaction potential with the substrates decreases. We discuss the peculiar pinning mechanism of the upper substrate in the presence of a lubricant monolayer.

Electrochemical Control of Peptide Self-Organization on Atomically Flat Solid Surfaces: A Case Study with Graphite

Langmuir ◽  
2017 ◽  
Vol 34 (5) ◽  
pp. 1819-1826 ◽  
Author(s):  
Takakazu Seki ◽  
Christopher R. So ◽  
Tamon R. Page ◽  
David Starkebaum ◽  
Yuhei Hayamizu ◽  
...  
Keyword(s):  
Solid Surfaces ◽  
Self Organization ◽  
Electrochemical Control ◽  
Atomically Flat

Formation of Highly Ordered, Unusually Broad Polyethylene Lamellae in Contact with Atomically Flat Solid Surfaces

2003 ◽  
Vol 36 (26) ◽  
pp. 10130-10132 ◽  
Author(s):  
A. Tracz ◽  
I. Kucińska ◽  
J. K. Jeszka
Keyword(s):  
Solid Surfaces ◽  
Atomically Flat

Cluster ion bombardment on atomically flat Au(111) solid surfaces

1998 ◽  
Vol 54 (1-3) ◽  
pp. 76-79 ◽  
Author(s):  
Daisuke Takeuchi ◽  
Toshio Seki ◽  
Takaaki Aoki ◽  
Jiro Matsuo ◽  
Isao Yamada
Keyword(s):  
Ion Bombardment ◽  
Solid Surfaces ◽  
Cluster Ion ◽  
Atomically Flat

Contributions to the statistical theory of adsorption. II

1938 ◽  
Vol 34 (4) ◽  
pp. 587-598 ◽  
Author(s):  
G. P. Dube
Keyword(s):  
Statistical Theory ◽  
Partition Function ◽  
Adsorption Isotherm ◽  
Critical Phenomena ◽  
General Problem ◽  
Arbitrary Number ◽  
Solid Surfaces ◽  
Attractive Force ◽  
Adsorbed Molecules ◽  
Number Of Layers

The adsorption of gaseous molecules in a monolayer on solid surfaces has been studied theoretically by several workers, namely Fowler, Peierls and Wang. They have shown that the adsorption isotherm exhibits critical phenomena if there is assumed to be an attractive force between the neighbouring adsorbed molecules, and this has provided an explanation of the critical condensation phenomena observed in deposition experiments, for example those of Cockcroft on the deposition of cadmium on copper. The actual critical phenomena observed consist in the deposition of many layers which are formed if the first layer has fairly started. It is of interest, therefore, to consider if there are other ways in which critical phenomena can arise than through interactions in the first layer. The general problem of adsorption of an arbitrary number of layers is too complicated to study because of the mathematical difficulty in constructing the partition function. We therefore confine ourselves to the consideration of adsorption in two layers only.

Microstructures in Lubricant Thin Layers at the Magnetic Disk Surface, Observed Using Cryogenic Atomic Force Microscopy

2006 ◽  
Vol 59 (6) ◽  
pp. 394
Author(s):  
Teiji Kato ◽  
Takayuki Nakakawaji
Keyword(s):  
Atomic Force Microscopy ◽  
Disk Surface ◽  
Thin Layers ◽  
Solid Surfaces ◽  
Carbon Overcoat ◽  
Magnetic Disk ◽  
Force Microscopy ◽  
Atomic Force ◽  
Pfpe Lubricant ◽  
Atomically Flat

Cryogenic Atomic Force Microscopy (AFM) was used to observe perfluoropolyether (PFPE) lubricant molecules at atomically flat solid surfaces and at a magnetic disk surface to understand the lubricity of ultra-thin (1 nm) lubricant layers at the hard disk surface. Molecular imaging of PFPE lubricant molecules reveals the formation of reversed micelle structures at comparatively non-polar solid surfaces such as gold or the carbon overcoat of magnetic disks.

scholarly journals SLIDING BEARING DIAGNOSTICS

2017 ◽  
Author(s):  
A.A. Novikov ◽  
S.V. Korotkevich ◽  
N.F. Solovey
Keyword(s):  
Contact Resistance ◽  
Operating Regime ◽  
Boundary Friction ◽  
Lubricant Layer ◽  
Control Analysis ◽  
Threshold Values ◽  
Sliding Bearing ◽  
Electrical Circuits ◽  
Bearing Diagnostics ◽  
Boundary Lubricant

An explanation of electrophysical sounding method using for sliding bearing diagnostics at a boundary friction is given. Electrical circuits and a sliding bearing diagnostic way, where the control analysis of a boundary lubricant layer (BLL) thickness is realized indirectly in accordance with contact resistance parameters are developed. The sliding bearing greasing state is defined according to installed threshold values in advance which achievement defines it operating regime.

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