Effects of imposed displacement and initial coating thickness on fretting behaviour of a thermally sprayed coating

Kyungmok Kim, Alexander M. Korsunsky

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

This paper describes the effects of imposed displacement and initial coating thickness on fretting wear behaviour of a thermally sprayed coating. Initial coating thickness and imposed displacement between two mating components are important parameters affecting durability of a thermally sprayed coating under fretting conditions. Nevertheless, the effects of imposed displacement and coating thickness at flat-and-rounded frictional contacts of aerospace dovetail connections are not sufficiently investigated. In this paper, fretting wear experiments with a double-layer thermally sprayed coating are performed under different displacement and coating thickness conditions. The effects of the parameters are then identified by directly comparing the ratio of maximum tangential force to normal force. Experimental results show that the ratio evolutions are similar on the ratio versus accumulated reciprocal sliding distance chart within the displacement range of 0.4-0.6. mm. In addition, it is demonstrated that durability of the coating is increased with increasing the initial thickness of the coating. Finally, the effect of the initial coating thickness is described with exponential evolution law of fretting damage.

Original languageEnglish
Pages (from-to)1080-1085
Number of pages6
JournalWear
Volume271
Issue number7-8
DOIs
Publication statusPublished - 18 Jul 2011
Externally publishedYes

Keywords

  • Displacement
  • Fretting wear
  • Lubricant
  • Thermally sprayed coating
  • Thickness

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