The tribological performance of silver in aircraft turbine load cases

Philipp Renhart, Florian Summer, Florian Grün, Christoph Posch, Andreas Eder

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)


The primary focus of this work is to characterise the tribological behaviour of physical vapour deposition (PVD) coated silver bearing coatings under representative operational conditions in aircraft engines. Silver is a promising and well-known material for lead free journal bearings due to its excellent chemical and physical properties, such as heat conduction, ductility and its non-toxicity, but not comprehensively investigated for many potential tribological applications. The silver coating was tested in mixed friction, hydrodynamic friction and deficient lubrication against polished steel counterparts. In comparison to reference bearing materials silver showed a good damage tolerance in emergency operation scenarios by virtue of its ductility and heat conductive properties.

Original languageEnglish
Article number107184
Number of pages15
JournalTribology International
Issue numberNovember
Early online date14 Jul 2021
Publication statusPublished - Nov 2021

Bibliographical note

Publisher Copyright: © 2021 The Authors


  • Acoustic emission
  • Journal bearing
  • Silver
  • Sub-scale testing

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