Friction behavior of a multi-interface system and improved performance by AlMgB14-TiB2-C and diamond-like-carbon coatings

Jun Qu, Peter J. Blau, Clifton Higdon, Bruce A. Cook

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

This study investigated friction behavior of a bearing system with two interfaces involved: a roller component experiencing rolling-sliding interaction against twin cylinders under point contacts while simultaneously undergoing pure sliding interaction against a socket under a conformal contact. Lubrication modeling predicted a strong correlation between the roller's rolling condition and the system's friction behavior. Experimental observations first validated the analytical predictions using steel and iron components. Diamond-like-carbon (DLC) coating and AlMgB14-TiB2 coating with a carbon topcoat (BAMC) were then applied to the roller and twin cylinders, respectively. Testing and analysis results suggest that the coatings effectively decreased the slip ratio for the roller-cylinder contact and the sliding friction at both bearing interfaces and, as a result, significantly reduced the system frictional torque.

Original languageEnglish
Pages (from-to)182-186
Number of pages5
JournalTribology International
Volume99
DOIs
StatePublished - Jul 1 2016

Funding

This manuscript has been authored by UT-Battelle, LLC, under Contract no. DE-AC05-00OR22725 with the US Department of Energy . The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes.

Keywords

  • AlMgB-TiB
  • DLC
  • Multi-interface system
  • Rolling-sliding

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