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  4. Hydrogen assisted rolling contact fatigue
 
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2019
Conference Paper
Title

Hydrogen assisted rolling contact fatigue

Abstract
In this study the decompostion of a MAC and a PFPE lubricant was investigated in a ball-on-disk sliding test under vacuum and in an RCF test on full bearings. In-situ mass spectrometry was conducted to study possible tribochemical reactions with the steel bearing surface. The degradation oft he MAC fluid was correlated with the formation of gaseous reaction products including hydrogen and various alkanes and alkenes. An oxidation reaction between the lubricant and metal oxides was identified. FEM analysis was carried out to model he contact in the ball-on-disk experiments and to extract contact surface temperature fields. Post-RCF hydrogen analysis of bearing components indicated an increased hydrogen concentration in samples lubricated with MAC fluid only. The RCF tests with PEPE did not indicate any signs of suface damage.
Author(s)
Kürten, D.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Kailer, A.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Khader, I.
Fraunhofer-Institut für Werkstoffmechanik IWM  
Mainwork
13. VDI-Fachtagung Gleit- und Wälzlagerungen 2019. Gestaltung - Berechnung - Einsatz  
Conference
Fachtagung Gleit- und Wälzlagerungen 2019  
Language
English
Fraunhofer-Institut für Werkstoffmechanik IWM  
Keyword(s)
  • full bearings

  • MAC

  • PFPE lubricant

  • RCF test

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