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boundary lubrication

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boundary lubrication

[′bau̇n·drē ‚lü·brə′kā·shən]
(engineering)
A lubricating condition that is a combination of solid-to-solid surface contact and liquid-film shear.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

boundary lubrication

A phase in lubrication in which a thin film of oil only a few molecules thick separates two rubbing surfaces. It can occur because of a high bearing load, inadequate viscosity, oil starvation, or loss of oil pressure. Boundary lubrication is not a desirable phase of lubrication as a rupture of the thin film means wear and even seizure.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
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References in periodicals archive
Measurement of solid bodies boundary lubrication frictional coefficient for both kinds of oils used shows following well known lawfullnesses:
Examination of boundary lubrication frictional coefficient
Although the effect of galling sensitivity factors (such as roughness, boundary lubrication and temperature) upon skidmarking are not well documented, they are likely.
The Failure Atlas for Hertz Contact Machine Elements
A number of additives in rubber compounds promote wall-slippage (or boundary lubrication) between the compound and metal surfaces during processing, and we are all probably familiar with various process aids designed for this purpose.
The TMS rheometer
It is assumed that a significantly larger cover ratio would increase the effect of boundary lubrication and a significantly smaller cover ratio would not make the effect more difficult to detect.
A Novel Approach to Reduction of Frictional Losses in a Heavy-Duty Diesel Engine by Reducing the Hydrodynamic Frictional Losses
They cover near-field spectroscopic delineation of interphase boundaries for chemical mapping at the sub-micron resolution, indentation size effect and the Hall-Petch "law," boundary lubrication and adhesion of rubber from wipers to the JKR equation, the effect of surface roughness on the adhesion of elastomers to hard surfaces, contact problems at the nanometer and micrometer scales and depth sensing indentation techniques, indentation in ceramics, the effect of solid solution impurities on dislocation nucleation in a (001) molybdenum-1.5 at.% iridium single crystal, and self-sustained fracture waves in a soda-lime glass.
Mechanical behaviour of materials; selected, peer reviewed papers from the proceedings
This device measures the friction and wear under boundary lubrication conditions.
Effect of lubricant contamination on friction and wear in an EHL sliding contact/Tepalo uzterstumo itaka trinciai ir issidevejimui ehl slydimo kontakte
Sessions will include contact mechanics, friction and wear; tribomaterials, texturing, coatings and surface modifications; manufacturing processes; elastohydrodynamic, hydrodynamic, and boundary lubrication; molecular tribology, superlubricity, molecular simulations, and microtribology.
Diary
They cover the role of surface analysis, nano-scale events in tribochemical reactions in boundary lubrication, the fracture of surface on an atomic scale, materials, and gas phase lubrication.
Micro and nanotribolgy
Petroleum oils have inherent physical and chemical qualities that promote hydrodynamic and boundary lubrication. However, these natural qualities were not sufficient for the internal combustion engine.
Tribology and mechanical systems
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