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

산 및 알칼리 용액에 부식된 SiC의 기계적 특성에 대한 와이블 통계 해석

  • Ahn, Seok-Hwan (Dept. of Mechatronics, Jungwon Univ.) ;
  • Jeong, Sang-Cheol (UR Interdisciplinary Program of Mechanical Engineering, Pukyong Nat'l Univ.) ;
  • Nam, Ki-Woo (Dept. of Materials Science and Engineering, Pukyong Nat'l Univ.)
  • 안석환 (중원대학교 메카트로닉스학과) ;
  • 정상철 (부경대학교 학연협동기계공학) ;
  • 남기우 (부경대학교 재료공학과)
  • Received : 2016.01.19
  • Accepted : 2016.07.21
  • Published : 2016.09.01

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.

Keywords

Weibull Statistical Analysis;Bending Strength;Vickers Hardness;SiC;Corrosion Resistance;Acidic and Alkaline Solution;Weibull Distribution

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