Abstract
Pin-on-disc tribological tests were performed on Si3N4/SiC/graphite ceramic composites
with 5N applied load, at room temperature in dry conditions. Tests were completed with
microhardness tests (F=10N), indentation fracture toughness tests (F=100N), furthermore
morphological analyses of the wear tracks by SEM. Based on SEM pictures of the wear traces the
main damage mechanism could be identified as an abrasive wear.
The purpose of the paper is to model the abrasive wear of the given composites. For this reason
lateral crack chipping model suggested by Evans and Marshall for Si3N4 ceramics was used for the
assessment of the worn volume of the abrasive wear process. The model has been applied with the
aim of validating it
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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