Journal of Materials Science

, Volume 29, Issue 22, pp 5947–5952 | Cite as

Strength estimation for silicon nitride specimens with a spherical void

  • M. Kaji
  • S. Yoshiura
  • M. Nishimura


Silicon nitride specimens embedded with a single spherical void were prepared for a flexural strength test. The measured flexural strengths of the specimens were compared with theoretically estimated strengths. Estimation of the strengths was done using a Gibbs free-energy criterion. The energy was calculated by Eshelby's equivalent inclusion method for a specimen with an embedded void. Good correspondence was obtained between the experimental and the estimated fracture loads. A deviation of the estimated strength from the experimental value was observed for voids whose diameters were comparable with intrinsic defects.


Nitride Material Processing Flexural Strength Silicon Nitride Strength Test 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • M. Kaji
    • 1
  • S. Yoshiura
    • 1
  • M. Nishimura
    • 1
  1. 1.Central Research LaboratoryKyocera CorporationKagoshimaJapan

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