Results 231 to 240 of about 1,097,644 (286)

Boundary Lubrication by Associative Mucin

Langmuir, 2015
Mucus lubricants are widely distributed in living organisms. Such lubricants consist of a gel structure constructed by associative mucin. However, limited tribological studies exist on associative mucin fluids. The present research is the first to investigate the frictional behavior of a typical intact vertebrate mucin (loach skin mucin), which can ...
Xiang, Wang, Miao, Du, Hongpeng, Han, Yihu, Song, Qiang, Zheng   +4 more
openaire   +2 more sources

Boundary lubrication under water

Nature, 2006
Boundary lubrication, in which the rubbing surfaces are coated with molecular monolayers, has been studied extensively for over half a century. Such monolayers generally consist of amphiphilic surfactants anchored by their polar headgroups; sliding occurs at the interface between the layers, greatly reducing friction and especially wear of the ...
Briscoe, WH, Titmuss, S, Tiberg, F, Thomas, RK, McGillivray, DJ, Klein, J   +5 more
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Boundary Friction and Boundary Lubrication

Scientific Lubrication, 1957
Friction arises at the real contact area of two contacting bodies. This area depends on the mechanical properties of the bodies, geometrical configuration, and load. The authors described a new optical method of determining the area of contact, developed in the Laboratory of Friction and Friction Materials of the Academy of Sciences, Russia.
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Theory of friction and boundary lubrication

Physical Review B, 1993
When an external force acts on an adsorbate structure, the structure may slide or flow relative to the substrate. The mechanism behind this sliding motion is of fundamental importance for the understanding of friction and lubrication between two flat macroscopic surfaces, and is also related to the question of what boundary condition should be used for
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Boundary Lubrication and Boundary Films

1993
Despite many years of research, boundary lubrication remains the least well understood regime in the Tribological pantheon. This is in part because it is a broad church, spanning a wide range of quite different phenomena which are, in practical terms, very difficult to disentangle. Also the processes involved in boundary lubrication are very localised,
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Part III. Boundary and extreme pressure lubrication - Mechanism of boundary lubrication

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1952
Abstract This paper shows how the theory of metallic friction, discussed in earlier papers, is modified in the presence of boundary films. Over the regions of contact the load is mainly supported by the boundary film, but some metallic interaction occurs through it with the formation of minute metallic junctions.
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Boundary Lubrication and Boundary Lubricating Films

2000
Stephen Hsu, Richard Gates
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Mechanism of Boundary Lubrication

2001
Abstract It has already been indicated that the boundary properties of lubricant films depend on the nature of the metal surfaces as well as on the composition of the lubricant itself. Nevertheless, little work of a consistent nature has been carried out on the effect of the underlying metal on boundary lubrication.
F P Bowden, D Tabor
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A Theory of Boundary Lubrication

A S L E Transactions, 1959
The mechanism of boundary friction is assumed here to be due to the molecular forces between hydrocarbon molecules adsorbed on the surfaces rather than to welding and tearing of the opposing surface roughness. On this assumption the frictional force, which arises when two orientated layers are moved over each other, can be calculated.
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Experimental and Numerical Study of the Mixed Lubrication Considering Boundary Film Strength

Materials, 2023
Zhijun Yan
exaly