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

作者：Khader Iyas^*; Kuerten Dominik; Kailer Andreas

来源：Wear, 2012, 296(1-2): 630-637.

DOI：10.1016/j.wear.2012.08.010

• Silicon nitride
• Rolling sliding contact
• Wear simulation
• Tribochemical wear
• Finite element modeling

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. %26lt;br%26gt;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.

• 出版日期2012-8-30