Effect of surface topography on the frictional behavior at the micro/nano-scale

Sung, In-Ha; Lee, Hyung Suk; Kim, Dae Eun

doi:10.1016/s0043-1648(03)00308-9

Cited by 48 publications

(18 citation statements)

References 29 publications

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“…4(a), the epoxy composite with 2.5 wt% SCFs exhibits a significant increment in the friction coefficient with increased normal load from 2 to 6 N. At the low SCF content of 2.5 wt%, a continuous impact of the inclined pin against protruded SCFs can give a high friction coefficient during the sliding by enlarging a tangential force that is indicative of a frictional force [43]. As a result, an increase in the normal load results in a significant increment in the friction coefficient of the epoxy composite via the pronounced impact of the inclined pin against the protruded SCFs.…”

Section: Resultsmentioning

confidence: 99%

Tribological properties of short carbon fibers reinforced epoxy composites

et al. 2014

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Short carbon fiber (SCF) reinforced epoxy composites with different SCF contents were developed to investigate their tribological properties. The friction coefficient and wear of the epoxy composites slid in a circular path against a steel pin inclined at 45° to a vertical axis and a steel ball significantly decreased with increased SCF content due to the solid lubricating effect of SCFs along with the improved mechanical strength of the composites. The scanning electron microscope (SEM) observation showed that the epoxy composites had less sensitive to surface fatigue caused by the repeated sliding of the counterparts than the epoxy. The tribological results clearly showed that the incorporation of SCFs was an effective way to improve the tribological properties of the epoxy composites.

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Section: Resultsmentioning

confidence: 99%

Tribological properties of short carbon fibers reinforced epoxy composites

et al. 2014

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“…It was found that friction coefficient could be reduced from 0.5 to 0.05 by nano-texturing. 39 Sung et al (2003) carried out friction tests with micro-grooved silicon surfaces. Both micro-tribotester and AFM were used to investigate the micro/nano frictional behavior.…”

Section: Experimental Workmentioning

confidence: 99%

“…The effect of slope between the tip and the asperities on the frictional behavior was also reported. 10 These works suggest that frictional behavior at micro/nano scale is very much dependent on the surface structure and topography. Furthermore, the contact geometry between the tip and the surface such as area and orientation of the contacting angle affect the frictional force significantly.…”

Section: Experimental Workmentioning

confidence: 99%

Nano-scale friction: A review

Kim

2009

Int. J. Precis. Eng. Manuf.

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Frictional force is a resistant force that must be overcome to achieve relative motion between two components in contact. The economical and technological benefits of controlling friction and wear are tremendous. However, due to the complex nature of the phenomena, clear understanding of the mechanisms are yet to be achieved, particularly at the nano-scale where surface forces tend to dominate the tribological behavior of the system. In this paper the results of numerous theoretical, experimental, and numerical works on the fundamental mechanisms of friction at the nano-scale are reviewed. It is shown that friction coefficient values for nano-scale systems are quite varied depending on the conditions under which the system is investigated. As for the mechanism that causes friction at the nano-scale, interaction of the atoms plays a vital role. Furthermore, factors such as atomic radius, interatomic potential energy, and lattice parameters contribute to the degree of atomic interaction.

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“…The lubricant reservoir provides continuous lubrication, and captures the wear particles to reduce the furrows [5]. Surface texturing is a widely used approach to improve the load capacity, wear resistance, and friction coefficient of tribological mechanical components [6][7][8], including sliding surfaces [9,10]. Surface texture can also improve the running-in paper focuses on the research of the surface texture field and optimize the parameters of microtexture.…”

Section: Introductionmentioning

confidence: 99%

Effect of Surface Texturing Parameters on the Lubrication Characteristics of an Axial Piston Pump Valve Plate

Wang

Zhang

et al. 2018

Lubricants

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Abstract:In this article, a geometrical model of different microtextures is established for an axial piston pump valve plate. A finite differential method was used to solve the Reynolds equation for the oil film thickness and pressure, which were simulated under different microtextures. The influence of microtexture shape and structure on performance was studied and optimal parameters sought. Different convergence gaps are formed by different microtexture radii, and they produce different hydrodynamic effects. The lubrication characteristics of the valve plate are better when a microtexture is used and are influenced by the type of microtexture. We reached the following conclusions: (1) The lubrication characteristics of the valve plate are influenced by different microtexture parameters and can be improved by optimizing the microtexture parameters; (2) There is an optimal parameter combination when adding microtexture with three shapes (spherical, cylindrical and square) and the optimal dimensionless oil film pressure lubrication characteristics can be obtained; (3) The degree of improvement in the dimensionless oil film pressure lubrication characteristics was (listed from highest to lowest): micro-hemispherical texture > micro-cylindrical texture > micro-square texture.

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Effect of surface topography on the frictional behavior at the micro/nano-scale

Cited by 48 publications

References 29 publications

Tribological properties of short carbon fibers reinforced epoxy composites

Tribological properties of short carbon fibers reinforced epoxy composites

Nano-scale friction: A review

Effect of Surface Texturing Parameters on the Lubrication Characteristics of an Axial Piston Pump Valve Plate

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