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Journal of Materials Science

, Volume 32, Issue 21, pp 5775–5778 | Cite as

The effect of the microstructure on the static fatigue behaviour of Si3N4

  • WANG HONGJIE
  • WANG YONGLAN
  • JIN ZHIHAO
  • ZHOU HUIJIU
Article

Abstract

The effect of the microstructure on the static fatigue behaviour of two Si3N4 samples containing different sintering aids has been studied. The results show that the static fatigue behaviours of the two samples are consistent with each other in various media, i.e. the rate of crack growth of both materials is greatest in water, followed by air, and then kerosene. A distinctive microstructure endows one of the samples with a higher fracture toughness. In turn this results in a higher crack propagation resistance and a longer service life at the same stress level.

Keywords

Fracture Toughness Stress Intensity Factor Kerosene Crack Growth Rate Stress Corrosion Crack 

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Copyright information

© Chapman and Hall 1997

Authors and Affiliations

  • WANG HONGJIE
    • 1
  • WANG YONGLAN
    • 1
  • JIN ZHIHAO
    • 1
  • ZHOU HUIJIU
    • 1
  1. 1.School of Material Science & EngineeringXi′an Jiaotong UniversityXi’anChina

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