Mechanical properties of SiC–NbB2 eutectic composites by in situ spark plasma sintering

Dmytro Demirskyi, Oleg Vasylkiv

研究成果: Article査読

14 被引用数 (Scopus)

抄録

The in situ synthesis/consolidation of SiC–NbB2 eutectic composites by spark plasma sintering (SPS) is reported. The SPS processing resulted in composites with eutectic structure and hardness of 25–31 GPa. Screening of experimental data suggested that eutectic composition in this system is 37–39 vol% NbB2. The temperature dependence of the flexural strength of the SiC–NbB2 system has been reported for the first time. Ceramic composites with eutectic structure exhibited an unchanged strength of 610±25 MPa at room temperature and at 1600 °C. Further increase in testing temperature, i.e. up to 1900 °C, was accompanied by a slight decrease in strength. Such behavior was attributed to increased contribution of the plastic deformation to the fracture process.

本文言語English
ページ(範囲)19372-19385
ページ数14
ジャーナルCeramics International
42
16
DOI
出版ステータスPublished - 2016 12 1
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • セラミックおよび複合材料
  • プロセス化学およびプロセス工学
  • 表面、皮膜および薄膜
  • 材料化学

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