Tribology Letters
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Effect of Sliding Speed on Surface Modification and Tribological Behavior of Copper–Graphite Composite
Tribology Letters - Tập 41 - Trang 363-370 - 2010
In practice, the sliding speed is an important parameter for materials applied in sliding condition. We have conducted an experimental study to explore the effect of sliding speed on friction and wear performance of a copper–graphite composite. The sliding tests were carried out over a wide range of speeds with a pin-on-disc configuration. The results show that there is a critical speed at which t...... hiện toàn bộ
Review: Friction and Lubrication with High Water Content Crosslinked Hydrogels
Tribology Letters - Tập 68 - Trang 1-15 - 2020
As soft aqueous hydrogels have moved from new materials to the basis for real engineered devices in the last 20 years, their surface friction and lubrication are emerging as critical aspects of their function. The flexibility to alter and augment their mechanical and surface properties through control of the crosslinked 3D polymer networks has produced materials with diverse surface behaviors, eve...... hiện toàn bộ
Modeling of the Tribological Behavior of Materials Using Crystal Plasticity Constitutive Model. Effect of Heat Partition and Friction
Tribology Letters - Tập 69 - Trang 1-13 - 2021
A polycrystal model has been developed to study the tribological behavior of an aggregate BCC crystal under extreme contact loading conditions. The polycrystal behavior is defined from the local behavior of a single crystal within the framework of the Hill’s self-consistent scheme by considering the temperature effect. The tribological problem simulated in this work is a contact problem where a pi...... hiện toàn bộ
Structural and Chemical Evolution of the Near-Apex Region of an Atomic Force Microscope Tip Subject to Sliding
Tribology Letters - Tập 53 - Trang 181-187 - 2013
Atomic force microscopy and molecular dynamics simulation are used to study the nanoscale wear of a silicon dioxide tip sliding on a copper substrate. Wear is characterized in terms of structural and chemical evolution of the system where the latter is possible experimentally using atom probe tomography of the slid tips. Comparison of the experimentally observed and simulation-predicted wear revea...... hiện toàn bộ
Effect of rare earths on mechanical and tribological properties of carbon fibers reinforced PTFE composite
Tribology Letters - Tập 21 - Trang 153-160 - 2006
The effect of a rare earth (RE) surface treatment on the mechanical and tribological properties of carbon fiber (CF) reinforced polytetrafluoroethylene (PTFE) composites was experimentally investigated. The tensile properties of the CF reinforced PTFE (CF/PTFE) composites treated with air oxidation and RE modifier were superior to those of untreated CF/PTFE composites, while RE treatment was most ...... hiện toàn bộ
On the Use of Surface Roughness Parameters
Tribology Letters - Tập 71 - Trang 1-9 - 2023
In most practical applications, surface roughness is characterized by just one or two parameters (numbers). I show that the standard maximum surface height parameters fluctuate strongly between different surface realizations (or measurements), and should not be used in the design of engineering components. I show how some roughness parameters depend on the size of the roll-off region in the surfac...... hiện toàn bộ
Pile Surface Tactile Simulation: Role of the Slider Shape, Texture Close to Fingerprints, and the Joint Stiffness
Tribology Letters - Tập 59 - Trang 1-12 - 2015
Stimulating the human hand with a tactile device in order to simulate pile fabric touch is a challenge. The stimulation has to be designed from the friction characteristics of the investigated pile surfaces, i.e. velvet fabrics. The tactile illusion of pile is given when touching the smooth plate of the tactile stimulator STIMTAC by modulating the coefficient of friction between the plate and the ...... hiện toàn bộ
Thermal-Controlled Frictional Behaviour of Nanopatterned Self-assembled Monolayers as Triboactive Surfaces
Tribology Letters - Tập 68 - Trang 1-14 - 2020
Friction is an important limitation of energy efficiency performances of MEMS/NEMS but is, in the same time, a great opportunity for harvesting energy by designing optimized tribo-electric nano-Generators (TENG). Thus, frictional behaviour can be accurately controlled in real time by using thermally sensitive periodic patterned self-assembled monolayers of n-octadecyltrichlorosilane (OTS) grafted ...... hiện toàn bộ
A Pin-on-Disc Study on the Wear Behaviour of Two High-Performance Railway Wheel Steels
Tribology Letters - Tập 65 - Trang 1-7 - 2017
The wear behaviour of two railway wheel steels, ER8 and SUPERLOS®, was studied through pin-on-disc tests, and the results were correlated with those previously obtained with twin-disc tests. The work-hardening of the steels was investigated with Vickers hardness measurements, and the wear mechanisms were studied using scanning electron microscopy. ER8 discs showed higher wear resistance, lower wor...... hiện toàn bộ
Adhesive Wear Regimes on Rough Surfaces and Interaction of Micro-contacts
Tribology Letters - Tập 69 - Trang 1-16 - 2021
We develop an analytical model of adhesive wear between two unlubricated rough surfaces, forming micro-contacts under normal load. The model is based on an energy balance and a crack initiation criteria. We apply the model to the problem of self-affine rough surfaces under normal load, which we solve using the boundary element method. We discuss how self-affinity of the surface roughness, and the ...... hiện toàn bộ
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