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J. Korean Ceram. Soc. > Volume 33(6); 1996 > Article
Journal of the Korean Ceramic Society 1996;33(6): 709.
인장강도 시험을 통한 질화규소 소재의 설계계수 계산
최영민, 이재도1, 고준2
한국화학연구소 무기소재연구부
1한국화학연구소 무기소재연구
2충남대학교 재료공학과
Calculation of Design parameter of Si3N4 for Engineering part through the Measurement of Tensile strength
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.
Key words: Teansile test, Wibull modulus, Material design parameter
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