Results 281 to 290 of about 2,250,140 (346)

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
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.
openaire   +1 more source

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

Problems of boundary lubrication

Tribology International, 1995
Problems of the boundary lubrication mechanism, the influence of temperature upon the durability of boundary lubricating layers, ways of improving their efficiency, design models of wear and transition temperatures are treated, and further trends in the progress of the boundary lubrication theory are outlined.
openaire   +1 more source

Boundary lubrication: current understanding

Tribology Letters, 1997
Boundary lubrication as a research topic involves materialsscience, lubricant chemistry, fluid mechanics, and contactmechanics. As such, it is a complicated subject, yet itsindustrial significance is self-evident in the design ofmachineries, engines, gears, bearings, transmissions, etc.
openaire   +1 more source

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

Boundary lubrication of metals

Wear, 1969
Abstract An equation for the coefficient of friction of metals is given which includes parameters to describe the bulk properties of the metals and parameters to describe the state of the metal surfaces.
openaire   +1 more source

Boundary Lubrication of Materials

MRS Bulletin, 1991
Lubrication may be defined as any method used to achieve control of friction and wear of interacting surfaces in relative motion under load. Gases, liquids, and solids have been used successfully as lubricants. To prevent surface contact, liquids and gases provide a film under hydrodynamic pressure to support the load.When the load is high and/or the ...
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