High-temperature properties of a silicon nitride/boron nitride nanocomposite

Takafumi Kusunose, Rak Joo Sung, Tohru Sekino, Shugi Sakaguchi, Koichi Niihara

研究成果: Article査読

10 被引用数 (Scopus)

抄録

Hexagonal graphitic BN (h-BN) is interesting as a second phase for high-temperature structural ceramics because it has the same crystal structure as graphite, for which fracture strength and Young's modulus increase with increased temperature. In this study, high-temperature mechanical properties of Si3N4/BN nanocomposite were evaluated to clarify the effect of fine h-BN particles at elevated temperatures. As a result, we found that high-temperature strength and hardness of the nanocomposite were maintained up to high temperatures; also, its Young's modulus increased gradually, concomitant with elevated temperatures up to 1400 °C. Finally, these properties were compared with those of monolithic Si3N4 and Si3N4/BN microcomposite.

本文言語English
ページ(範囲)1432-1438
ページ数7
ジャーナルJournal of Materials Research
19
5
DOI
出版ステータスPublished - 2004 5

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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