...Pramod S. Kathamore; Bhanudas D. Bachchhav; Manisha B. Bachchhav Purpose This study aims to assess oil film strength and performance under various tribological conditions, emphasizing optimal lubricant selection for boundary lubrication to protect interacting surfaces effectively. Design...

... Licensed re-use rights only Hydrodynamic lubrication Boundary lubrication Piston skirt-cylinder contact Slip/no-slip conditions A = dimensionless slip coefficient (A = αη/c); B = dimensionless piston radius (B = R/L); b = slip length, μm...

.../legalcode ZDDP Boundary lubrication Atom probe tomography Roller bearing Tribochemistry Zinc dialkyldithiophosphate (ZDDP) is a multi-functional additive that has been widely used for formulating lubricants because of its excellent performance and relatively low cost (Spikes, 2004...

...Bora Lee; Yonghun Yu; Yong-Joo Cho Purpose This paper aims to propose a new scuffing model caused by the depletion of additives in boundary lubrication condition. Design/methodology/approach The differential equation governing the distribution of additive content in the fluid film was used...

... in piston manufacturing. However, new failure problems emerge, and the wear of skirt under boundary lubrication conditions is an essential problem which needs to be solved urgently. Design/methodology/approach In this research, the abrasion testing machine was used to simulate the wear behavior under...

..., chemical, aerospace and other industries have attracted considerable attention. However, the ceramic boundary lubrication problem limits their wide use in many fields (Meng et al., 2008). Therefore, it is very significant to explore the friction and wear properties of ceramic materials in boundary...

... on the wear of the cylinder liner in the boundary lubrication regime. Design/methodology/approach Conventional nitrided steel, as well as diamond-like carbon and chromium nitride-coated piston rings, were tested against cast iron, AlSi and Fe-coated AlSi cylinder liners. The experiments were carried out...

...Lukasz Wojciechowski; Radomir Majchrowski; Thomas G. Mathia Purpose Boundary lubrication cannot provide long-term protection against scuffing. Therefore, it is fundamental to recognise the breaking point of the boundary layer that activates scuffing. Based on this assumption, three-dimensional (3D...

...Gabi N Nehme; Saeed Ghalambor Purpose – This paper aims to focus on the topics of phosphorus (P) and sulfur (S) in engine oil. Very reproducible boundary lubrication tests were conducted as part of Design of Experiments software to study the behavior of fluorinated catalyst iron fluoride (FeF3...

...Gabi Nehme Purpose The purpose of this paper is to describe very reproducible boundary lubrication tests, conducted as part of design of experiment (DOE) to study the behavior of fluorinated catalyst mixed with polutetrafluoroethylene or Teflon (PTFE) in developing environmentally friendly...

...Gabi Nehme Purpose The purpose of this paper is to study the friction and wear performance of two plain ZDDP oils in the presence of fluorinated catalyst and PTFE combinations under extreme boundary lubrication of 385 Newton load (Hertzian contact pressure of 2.72 GPa). The mechanism of tribofilm...

...Tom Lecklider A reciprocating sliding pad on plate boundary lubrication friction test is described. Typical friction waveforms are shown and compared with the output from an automated measuring system based on a digital storage oscilloscope. © Company 1995 Analysis Boundary lubrication...