Thermomechanical Behavior and Wear Resistance of Whisker Or Particle Reinforced Ceramics

Paper #:
  • 91A107

Published:
  • 1996-04-01
Author(s):
Affiliated:
Abstract:
Ceramic composite materials have been intensively studied during the last years. Particles and whisker reinforcement have shown the simultaneous advantage to allow the preparation of composite materials by conventional processing and to lead, when under optimum conditions, to dramatic toughening and strengthening. Since wear resistance of brittle material have been shown to be related to both hardness and toughness, composite materials with improved were resistance have been developed for cutting tools or bearing applications. However the mechanism responsible for toughening is of major important for wear resistance effectiveness. We have therefore reviewed the main mechanisms before presenting some examples of composites materials for wear resistance applications. Those instances show that although leading to toughening, these composite materials do not systematically reduce the erosion rate which seems to depend on other factors such as SCG, third layer or any lubricant liquid, microcracking and temperature.
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