Tribology Letters

, Volume 11, Issue 1, pp 23–28 | Cite as

The Difference in Running-In Period and Friction Coefficient Between Self-Mated Si3N4 and SiC Under Water Lubrication

  • Ming Chen
  • Koji Kato
  • Koshi Adachi

Abstract

Running-in periods and friction coefficients of SiC and Si3N4 sliding against themselves under water lubrication were investigated with a pin-on-disk apparatus at sliding speed of 120 mm/s and a normal load of 5 N under ambient conditions. It was found that the running-in period of self-mated Si3N4 is much shorter than that of self-mated SiC, and also that the steady-state friction coefficient of self-mated Si3N4 was lower (≤0.0035) than that of self-mated SiC (0.01). The difference in mechanism was analyzed from the point of view of electronic structure and surface chemistry.

running-in period tribochemical reaction water lubrication silicon nitride silicon carbide friction coefficient 

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Copyright information

© Plenum Publishing Corporation 2001

Authors and Affiliations

  • Ming Chen
    • 1
  • Koji Kato
    • 1
  • Koshi Adachi
    • 1
  1. 1.Department of Mechanical EngineeringTohoku UniversitySendaiJapan

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