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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 |
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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. |
Key words:
Teansile test, Wibull modulus, Material design parameter |
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