Wear diagram for sliding of silicon nitrides

Dae Soon Lim, Seong Khil Park, Hahngue Moon

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

Knowledge of the friction and wear behavior of ceramics is essential for their successful tribological applications in advanced mechanical systems. Understanding of this important behavior is very limited because of the complexity of the wear processes. In this study, wear diagrams, which are three-dimensional representations of the dependence of the wear on the applied pressure and the sliding velocity, were constructed from sliding test data with silicon nitride specimens. Two kinds of silicon nitride were selected to study the micro-structural effect on the wear behavior. A multi-wear tester with pin-on-disk test geometry was used. The applied pressure and the sliding velocity ranged from 1 to 100 MPa and 0.01 to 0.30 m/s, respectively. The results show the existence of two distinct regions for the mild and the severe wear in wear diagrams of both materials, but with different proportions of the two regions. Scanning electron microscopy (SEM) of the worn area shows clearly that different wear mechanisms dominate in the mild and severe wear regions. A possible wear transition model from mild to severe wear is discussed based on SEM observations of surface damage and the wear diagrams.

Original languageEnglish
Pages (from-to)151-160
Number of pages10
JournalASTM Special Technical Publication
Issue number1167
Publication statusPublished - 1992
Externally publishedYes
EventSymposium on Wear Testing of Advanced Materials - San Antonio, TX, USA
Duration: 1992 Nov 141992 Nov 14

ASJC Scopus subject areas

  • Engineering(all)

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