The relationship between the change in stress intensity factor and wear rate at elevated temperatures for ceramics

Jen-Fin Lin, Yuh Neng Chen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An almost constant fracture toughness exists for the ceramic silicon nitride over a broad range of operating temperatures. However, Si3N4 specimens show significant wear rate increases as the operating temperature is increased. It is therefore impractical to use fracture toughness to express the wear rates within the temperature range of 25°C to 550°C. However, notable changes in the material stress intensity occur in the Si3N4 material over the same temperature range; these changes are conveniently employed for the expression of wear rate. A relevant relationship between the specimen's wear rate and the factored change in stress intensity is thus developed for a fatigue wear model having ceramic-ceramic mating over the temperature range of 25°C to 550°C. The regressions of the experimental results reveal that the foregoing relationship in terms of a polynomial form is better than a power form.

Original languageEnglish
Pages (from-to)131-139
Number of pages9
JournalWear
Volume185
Issue number1-2
DOIs
Publication statusPublished - 1995 Jan 1

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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