Results 181 to 190 of about 2,264,111 (240)

Wear in boundary lubrication

Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2002
Wear is a complex subject. Wear studies under lubricated conditions can be classified into two categories: wear mechanisms study of the materials under ‘lubricated’ conditions, and the evaluation of the lubricant chemistry using the same materials.
S. M. Hsu, R Munro, M. C. Shen
openaire   +1 more source

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,
openaire   +1 more source

On the oil-gas-solid mixed bearing between compression ring and cylinder liner under starved lubrication and high boundary pressures

, 2019
When piston rings suffer starved lubrication, the gas pressure at the leading and trailing edge is not negligible, especially near the fire top dead centers (FTDCs).
L. Zhan, Xianghui Meng, Chengwei Wen, Suiran Yu, Zhong Zhou   +4 more
semanticscholar   +1 more source

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 and hydrodynamic lubrication

Wear, 1990
Abstract Models of typical characteristics of the surfaces of two interfacing solids under pressure and sliding against each other are described. In the first model, the asperities, wedges of the harder surface, indent into the softer surface due to the applied pressure, producing opposing ridges on the surface of the softer component.
openaire   +1 more source

Boundary Lubrication and Boundary Lubricating Films

2000
Stephen Hsu, Richard Gates
openaire   +2 more sources

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
openaire   +1 more source

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.
openaire   +1 more source

Alkyl-Cyclens as Effective Sulfur- and Phosphorus-Free Friction Modifiers for Boundary Lubrication.

ACS Applied Materials and Interfaces, 2017
Michael Desanker, Xingliang He, Jie Lu, Pinzhi Liu, David Pickens, Massimiliano Delferro, T. Marks, Y. Chung, Q. Wang   +8 more
semanticscholar   +1 more source

Probing the Function of Solid Nanoparticle Structure under Boundary Lubrication

, 2017
Xiaoqiang Fan, Wen Li, Hanmin Fu, Minhao Zhu, Liping Wang, Z. Cai, Jian-hua Liu, Hao Li   +7 more
semanticscholar   +1 more source