SCANNING-TUNNELING-MICROSCOPY STUDY OF WEAR INDUCED BY FALSE BRINELLING ON ROLLING BEARINGS

Citation
M. Phanergoutorbe et al., SCANNING-TUNNELING-MICROSCOPY STUDY OF WEAR INDUCED BY FALSE BRINELLING ON ROLLING BEARINGS, Applied surface science, 108(1), 1997, pp. 45-51
Citations number
10
Categorie Soggetti
Physics, Condensed Matter","Chemistry Physical","Materials Science, Coatings & Films
Journal title
ISSN journal
01694332
Volume
108
Issue
1
Year of publication
1997
Pages
45 - 51
Database
ISI
SICI code
0169-4332(1997)108:1<45:SSOWIB>2.0.ZU;2-I
Abstract
The first step of the false brinelling process on rolling bearings was studied by scanning tunneling microscopy. It is demonstrated that fro m the beginning of fretting, the surface of the ball/raceway contact, is modified on the nanometrical scale even if using a lubricant protec tion. The main manifestation of wear is a progressive polishing of the surface. It is shown that during fretting, two phenomena could accele rate the wear process: an oxidation of the surface from the first minu tes and a microstructural transformation after several hours. This las t modification is attributed to the presence of a tribologically trans formed surface as those encountered in classical fretting conditions. These two damaging processes could be considerably reduced by the use of a well-adherent lubricant.