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Analysis of the Bénard Cell-Like Worn Surface Type Occurred During Oil-Lubricated Sliding Contact

[+] Author Affiliations
Jen Fin Lin

National Cheng Kung University, Tainan, Taiwan

Hsiao Yeh Chu

Kun Shan University, Tainan, Taiwan

Paper No. IJTC2009-15130, pp. 135-137; 3 pages
doi:10.1115/IJTC2009-15130
From:
  • ASME/STLE 2009 International Joint Tribology Conference
  • ASME/STLE 2009 International Joint Tribology Conference
  • Memphis, Tennessee, USA, October 19–21, 2009
  • Conference Sponsors: Tribology Division
  • ISBN: 978-0-7918-4895-1 | eISBN: 978-0-7918-3862-4
  • Copyright © 2009 by ASME

abstract

Scuffing wear is usually used as an important indication of the initiation of lubrication failure. Components with scuffing wear should be readily replaced in order to avoid severe wear. This paper observed the change of surface structure in the scuffed area of the worn surface of oil-lubricated vanes-on-ring specimens from a microscopic and nano-scale observation and material characterization. There existed a kind of Bénard cell-like special surface shape found from the observation of the TEM image of the scuffed surface. In order to see whether there was very hot surface temperature to produce Benard cell, structure of the surface ferrous material was used as an indirect evidence of high temperature. It showed that the temperature in the scuffed area suffered a very high temperature which was over 800°C from the TEM Result. It showed that very strong fluid convection or even evaporation may occur inside the scuffed surface. The material strength of the scuffed surface would be much lower due to this high temperature. The oil pressure of that high temperature area was also very high. These factors made it possible to form the Bénard cell structure in microscale.

Copyright © 2009 by ASME

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