Tribology Letters

, Volume 12, Issue 1, pp 43–50 | Cite as

Abrasion of Steel by Ceramic Coatings: Comparison of RF-DLC to Sputtered B4C

  • Stephen J. Harris
  • Gordon G. Krauss
  • Steven J. Simko
  • Timothy J. Potter
  • Robert W. Carpick
  • Bridget Welbes
  • Martin Grischke
Article

Abstract

The abrasion rates of steel balls sliding against a very smooth diamond-like carbon (DLC) coating and a rough boron carbide (B4C) coating are compared. The initial abrasiveness of the B4C coating is about 2 orders of magnitude greater than that of the DLC coating. Both coatings exhibit a rapid decrease in their abrasiveness with sliding distance, but the details of the abrasion kinetics of these coatings are quite different. The abrasiveness of B4C falls according to a simple power law, while the abrasiveness of the DLC remains constant for a duration that depends on the load and then switches rather suddenly to zero. An explanation for this different behavior is proposed. During the abrasion process the asperities on the B4C are smoothed to a startling extent.

Abrasion coating DLC B4asperities 

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Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • Stephen J. Harris
    • 1
  • Gordon G. Krauss
    • 1
  • Steven J. Simko
    • 1
  • Timothy J. Potter
    • 2
  • Robert W. Carpick
    • 3
  • Bridget Welbes
    • 3
  • Martin Grischke
    • 4
  1. 1.Chemistry and Environmental Science Department, MD 3083Ford Research LabsDearbornUSA
  2. 2.Physics DepartmentFord Research LabsDearbornUSA
  3. 3.Engineering Physics DepartmentUniversity of WisconsinMadisonUSA
  4. 4.R&D Wear ProtectionBalzers LtdBalzersLiechtenstein

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