Tribological properties of dimpled silicon nitride under oil lubrication

Uehara, Yoshitaka; Wakuda, Manabu; Yamauchi, Yukihiko; Kanzaki, Shuzo; Sakaguchi, Shuji

doi:10.1016/s0955-2219(03)00220-6

Cited by 62 publications

(37 citation statements)

References 7 publications

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“…These features can retain lubricant to release when needed, thus increasing the quantity of the lubricant locally even under high pressures (Blatter et al, 1999, Fenske et al, 2003, Alberdi et al, 2004, Uehara et al, 2004, Mourier et al, 2006and Andersson et al, 2007. The liquid trapped in the low valleys of the textured surfaces can be considered as a secondary source, which is then drawn by the relative movement of the surfaces to seep into the surrounding areas by capillarity action, and therefore, reduce friction and reduce the chance of galling (Wang et al, 2001 and2003).…”

Section: The Mechanisms Behind Tribological Improvements Through Surfmentioning

confidence: 99%

Optimised textured surfaces with application in piston ring/cylinder liner contact

Rahmani

Shirvani

2010

Tribology and Dynamics of Engine and Powertrain

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This item was submitted to Loughborough's Institutional Repository (https://dspace.lboro.ac.uk/) by the author and is made available under the following Creative Commons Licence conditions.For the full text of this licence, please go to: http://creativecommons.org/licenses/by-nc-nd/2.5/ In: Tribology and Dynamics of Engine and Powertrain: Fundamentals, Applications and Future Trends, Edited by H. Rahnejat, Woodhead Publishing, 2010, pp. 470-517, ISBN: 978-1-84569-993-2 Chapter 14 Optimised Textured Surfaces with Application in Piston-Ring/Cylinder Liner Contact R. RAHMANI, Loughborough University, UK A. SHIRVANI and H. SHIRVANI, Anglia Ruskin University, UK Abstract: The application of textured surfaces in tribology has recently gained a huge momentum. In this chapter, a systematic approach to investigate the maximum outcomes from employing such surfaces is introduced with an insight into their application in internal combustion engines. A combination of various affecting parameters on the tribological performance of such surfaces is studied and the optimum results were introduced. The effect of employing such optimised textures in enhancing the lubrication condition in piston ring/cylinder liner contact is also studied.Key words: surface texturing, piston ring/cylinder liner contact, optimisation, slider bearings IntroductionIn general, friction is inherent to and is produced between bodies in contact with relative motion. Friction tends to oppose this relative motion between the bodies through loss of energy mostly in the form of heat, mechanical vibration and noise. Therefore, in most cases, friction is an unfavourable phenomenon. In some cases introduction of friction is desired, for example in order to slow down a moving car, the brakes are used to reduce the existing kinetic energy in the wheels by means of producing frictional losses. However, in most of the cases, facilitating this relative motion between bodies is of concern and as a result, one needs to overcome friction so that the relative motion pursues with a minimal loss of energy.Excessive friction can cause damage to the surfaces in contact in several ways and as a result make them wear. Since the surfaces are damaged due to wear, the rate of energy dissipation due to friction increases and consequently amplifies the rate of wear itself (see Chapter 2).The reason for the existence of friction is mainly that in reality, there is no perfect smooth surface. In fact, surfaces have a degree of roughness in the form of small 'hills' and 'valleys' no matter how well they are prepared. When two surfaces, which are in contact with each other, are put into relative motion, the asperities on the In: Tribology and Dynamics of Engine and Powertrain: Fundamentals, Applications and Future Trends, Edited by H. Rahnejat, Woodhead Publishing, 2010, pp. 470-517, ISBN: 978-1-84569-993-2 opposing surfaces become locked hence inducing friction as initially proposed by Amontons for onset of motion and later under kinetic conditions by Coulomb (see Chapter 2). W...

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Section: The Mechanisms Behind Tribological Improvements Through Surfmentioning

confidence: 99%

Optimised textured surfaces with application in piston ring/cylinder liner contact

Rahmani

Shirvani

2010

Tribology and Dynamics of Engine and Powertrain

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“…In general, tribological characteristics can be controlled by creating microstructures on surfaces to decrease the friction coefficient and maintain a good lubrication condition [3][4][5][6][7][8][9][10][11]. Therefore, the creation of microstructures on the sliding parts of transport machinery has been studied [1,[4][5]8]. The reduction of friction of tribological components is considered to reduce energy use and environmental impact [1-2, 4, 5, 9].…”

Section: Introductionmentioning

confidence: 99%

“…The reduction of friction of tribological components is considered to reduce energy use and environmental impact [1-2, 4, 5, 9]. Textured surfaces have been studied in an attempt to reduce the friction of components [4][5][6][7]. It is expected that textured surfaces and textured patterns can act as reservoirs for engender persistent lubrication by increasing the quantity of lubricating oil during sliding while also keeping the lubricant oil at the desired location as shown in Fig.1.…”

Section: Introductionmentioning

confidence: 99%

“…It is expected that textured surfaces and textured patterns can act as reservoirs for engender persistent lubrication by increasing the quantity of lubricating oil during sliding while also keeping the lubricant oil at the desired location as shown in Fig.1. [4] Fig. 1 Microstructure acting as a reservior of oil [4].…”

Section: Introductionmentioning

confidence: 99%

“…Each factor may affect the contact and lubrication performance under certain conditions [3]. The density of a microstructure on a textured surface was previously studied in an attempt to reduce the friction coefficient [1,[4][5]7]. In this study, the texture-area ratio on a cylindrical inner surface and the diameter of craters processed by WEDT were studied.…”

Section: Introductionmentioning

confidence: 99%

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Development of Whirling Electrical Discharge Texturing on Inner Surface of Small Hole

Lertphokanont

Ota

Yasui

et al. 2013

JAMDSM

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The tribological characteristics of sliding parts can be controlled by creating a microstructure on their surface. However, the effect of microstructures on the surface of a small hole of an inner sliding part or a hardened part has not been investigated. Thus, an efficient method, electrical discharge texturing (EDT) was previously developed to create a microstructure using a single discharge. In this study, whirling electrical discharge texturing (whirling EDT: WEDT) was developed as a method of creating microstructures on the inner surface of small holes and mechanical parts made of high-hardness materials. It was examined whether the WEDT equipment can be used to texture the inner surface of small holes and high-hardness materials. In addition, the fundamental characteristics of WEDT were studied. It was verified that, it is possible to create microstructures via the whirling phenomenon and single discharge of WEDT. The shape and texture-area ratio can also be controlled by WEDT, where the texture-area ratio is controlled by varying the feed speed.

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Surface Engineering Design of Alumina-Matrix Composites

Zhang

Fan

et al. 2018

Self-Lubricating Composites

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Tribological properties of dimpled silicon nitride under oil lubrication

Cited by 62 publications

References 7 publications

Optimised textured surfaces with application in piston ring/cylinder liner contact

Optimised textured surfaces with application in piston ring/cylinder liner contact

Development of Whirling Electrical Discharge Texturing on Inner Surface of Small Hole

Surface Engineering Design of Alumina-Matrix Composites

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