Influence of uni and bi-modal SiC composition on mechanical properties and microstructure of reaction-bonded SiC ceramics

Byung Koog Jang, Se Young Kim, In Sub Han, Doo Won Seo, Kee Seog Hong, Sang Kuk Woo, Yoshio Sakka

研究成果: Contribution to journalArticle査読

8 被引用数 (Scopus)

抄録

Influence of SiC composition with different particle size on mechanical properties and microstructure of reaction-bonded SiC have been investigated using infiltration process of liquid Si. SiC specimens were prepared by reaction-bonding sintering at 1620°C in vacuum using different SiCC composition. Reaction-bonded SiC specimens show dense with 3.03.05 gr/cm3 of density. SiC specimens with bi-modal SiC composition show a fine microstructure than those of uni-modal SiC composition. In addition, in the specimens with bi-modal SiC composition, the microstructure of the sample with use of fine SiC starting powders is finer rather than those of use of relatively coarse SiC starting powders. The flexural strength and fracture toughness of specimens with bi-modal SiC composition are higher than those of uni-modal SiC composition. The main fracture mode of specimens with a high strength is intergranular fracture.

本文言語英語
ページ(範囲)1028-1031
ページ数4
ジャーナルJournal of the Ceramic Society of Japan
118
1383
DOI
出版ステータス出版済み - 11 2010
外部発表はい

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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