Weibull Statistical Analysis on the Mechanical Properties of SiC by Immersion in Acidic and Alkaline Solutions

Abstract

A Weibull statistical analysis of the mechanical properties of SiC ceramics was carried out by immersion in acidic and alkaline solutions. The heat treatment was carried out at 1373 K. The corrosion of SiC was carried out in acidic and alkaline solutions under KSL1607. The bending strength of corroded crack-healed specimens decreased 47％ and 70％ compared to those of uncorroded specimens in acidic and alkaline solutions, respectively. The corrosion of SiC ceramics is faster in alkaline solution than in acid solution. The scale and shape parameters were evaluated for the as-received and corroded materials, respectively. The shape parameter of the as-received material corroded in acidic and alkaline solutions was significantly more apparent in the acidic solution. Further, the heat-treated material was large in acidic solution but small in alkaline solution. The shape parameters of the as-received and heat-treated materials were smaller in both acidic and alkaline solutions. § 이 논문은 대한기계학회 창립 70주년 기념 학술대회

Failure analysis and countermeasures of the SCM435 high-tension bolt of three-step injection mold

“…This can be seen that the hardness of the material does not have a constant value but a distribution. Characteristic of the hardness distribution can be explained by Weibull distribution (Weibull, 1951; Ahn et al , 2016, 2017; Park et al , 2018).…”