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Friction 2014, 2(1): 58-63 https://doi.org/10.1007/s40544-014-0039-1
Research Article | Open Access | Issue | Published: 27 January 2014

Frictional performance of silicon carbide under different lubrication conditions

Show Author's Information Xingyu ZHAO,  Ying LIU( ),  Qingfeng WEN,  Yuming WANG
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China
Keywords:
frictional performance, wear mechanism, Silicon carbide, water, lubrication
Cite this article:
ZHAO X, LIU Y, WEN Q, et al. Frictional performance of silicon carbide under different lubrication conditions. Friction, 2014, 2(1): 58-63. https://doi.org/10.1007/s40544-014-0039-1
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Abstract Full text About this article

The frictional performance of materials used in face seals is critical to the sealing performance. Silicon carbide is commonly used in hard rings because of its abrasion resistance, corrosion resistance, and thermal shock resistance. In this study, the frictional performance of silicon carbide, including graphite-added silicon carbide, under water and lubrication-absent conditions was studied by using a Falex-1506 tribotester and different working parameters. In addition, the morphology of the worn surfaces was observed using scanning electron microscopy and the damage was characterized to understand the tribological behavior of different silicon carbides. The results suggest that the friction coefficients decrease with increasing pressure under water lubrication conditions because of the water within the holes on the surface of the materials. The percentage of water lubrication increases, whereas the percentage of solid friction decreases when the pressure increases. Under dry contact conditions, the friction coefficients change negligibly with increasing pressure and graphite-added silicon carbide shows better frictional performance.


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About this article

Frictional performance of silicon carbide under different lubrication conditions

Show Author's information Xingyu ZHAO, Ying LIU( ), Qingfeng WEN, Yuming WANG
State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China

Abstract

The frictional performance of materials used in face seals is critical to the sealing performance. Silicon carbide is commonly used in hard rings because of its abrasion resistance, corrosion resistance, and thermal shock resistance. In this study, the frictional performance of silicon carbide, including graphite-added silicon carbide, under water and lubrication-absent conditions was studied by using a Falex-1506 tribotester and different working parameters. In addition, the morphology of the worn surfaces was observed using scanning electron microscopy and the damage was characterized to understand the tribological behavior of different silicon carbides. The results suggest that the friction coefficients decrease with increasing pressure under water lubrication conditions because of the water within the holes on the surface of the materials. The percentage of water lubrication increases, whereas the percentage of solid friction decreases when the pressure increases. Under dry contact conditions, the friction coefficients change negligibly with increasing pressure and graphite-added silicon carbide shows better frictional performance.

Keywords: frictional performance, wear mechanism, Silicon carbide, water, lubrication

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Publication history

Received: 26 June 2013
Revised: 26 November 2013
Accepted: 03 January 2013
Published: 27 January 2014
Issue date: March 2014

Copyright

© The author(s) 2014

Acknowledgements

This work was supported by the National Basic Rese arch Program of China (973) (Grant No. 2009CB724304), the National Natural Science Foundation of China (Grant No. 51275268), and State Key Laboratory of Tribology (Grant No. SKLT11C4). The authors would like to thank Enago (www.enago.cn) for the English language review.

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