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A study on the wear of silicon nitride in rolling-sliding contact

 
: Khader, I.; Kürten, D.; Kailer, A.

:
Preprint urn:nbn:de:0011-n-2364198 (694 KByte PDF)
MD5 Fingerprint: fc5efe76b0d80132846b76c161ffa0a3
Created on: 19.5.2016


Wear 296 (2012), No.1-2, pp.630-637
ISSN: 0043-1648
ISSN: 1873-2577
Deutsche Forschungsgemeinschaft DFG
SFB 483; 4-2009 TP-A7
European Commission EC
FP7-NMP; 263476; ROLICER
English
Journal Article, Electronic Publication
Fraunhofer IWM ()
silicon nitride; rollingsliding contact; wear simulation; tribochemical wear; finite elementmodeling

Abstract
The aim of this study is to characterize the wear in silicon nitride rolls undergoing rolling–sliding contact. A rolling contact experiment was proposed and conducted on a twin-disk tribometer. The ceramic rolls were brought into rolling contact with hardened steel disks under water lubrication at a predefined slip ratio. The generated wear on the surface of the rolls was measured and converted into a wear coefficient, which was subsequently implemented in a finite element based simulation to estimate the influence of geometrical variations on the contact stresses.
The results show that wear in silicon nitride was numerically simulated to an acceptable accuracy by relying on a simple mathematical model. A correlation among progressive wear, contact stress fields and surface crack propagation patterns was established.

: http://publica.fraunhofer.de/documents/N-236419.html