Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Calculation of Design parameter of Si3N4 for Engineering part through the Measurement of Tensile strength

인장강도 시험을 통한 질화규소 소재의 설계계수 계산

  • Choi, Young-Min (Div. of Inorg. Mater., Korea Res. Inst. Of Chem. Tech) ;
  • Lee, Jae-Do (Div. of Inorg. Mater., Korea Res. Inst. Of Chem. Tech) ;
  • Ko, Jun (Dept. of Material Eng., Chungnam Nat. Univ)
  • 최영민 (한국화학연구소 무기소재연구부) ;
  • 이재도 (한국화학연구소 무기소재연구) ;
  • 고준 (충남대학교 재료공학과)
  • Published : 1996.06.01
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Abstract

Design parameter of Si3N4 for engineering part could be calculated through the measurement of tensile strength with cylindrical specimen($\Phi$=7.15, ι=110mm) Relative densities of Si3N4 test specimen prepared by pressure-less sintering (PLS) and sinter/HIP were 98.5 and 99.2% respectively. Tensile strength of Si3N4 was 378 MPa for PLS and 509 MPa for sinter/HIP. By the Weibull statistic Design parameter such as Weibull modulus m=8-12 could be calcuated. Fracture strength of Si3N4 related to volume could be effectively pridicted by using Weibull theory.

Keywords

References

  1. Br. Ceram. Trans. J. v.89 no.21 First Investigation on a New Tensile Testing System for Brittle Materials T. Bennett
  2. EP0241715 Means and Method for Determining the Tensil Strength of Ceramic Materials Mattsson
  3. 과학기술처 연구보고서 열기관용 세라믹 소제 및 부품개발-세라믹 valve용 소재 및 제조기술 개발 이재도;이오상;이상훈;최영민
  4. 과학기술처 연구보고서, KRISS-94-046-IR 세라믹 역학 특성 평가용 시편 제작 능력 확충 조성재
  5. Ing. Ventenstage Alad v.151 no.1 A Statistical Theory of the Strength of Materials W. Weibull
  6. Mechanical Behavior of Ceramics Engineering Design Data R.W. Davidge
  7. Ceramic Eng. Sci. Proc. v.12 no.9-10 Summary of Results of the Effects of Environment on Mechanical Behavior of High Performance Ceramics D.E. McCullum
  8. ESK Technical Information Data