Microstructure and high-temperature strength of textured and non-textured ZrB2 ceramics

Wen Wen Wu, Yoshio Sakka, Mehdi Estili, Tohru S. Suzuki, Toshiyuki Nishimura, Guo Jun Zhang

研究成果: Article査読

33 被引用数 (Scopus)

抄録

Zirconium diboride (ZrB2) ceramic possesses a unique combination of nice mechanical performance, high melting point (> 3000 °C) and great high-temperature oxidation resistance (up to 1600 °C), which makes it a promising material system for ever-increasing ultra-high temperature (UHT) applications. However, ZrB2 suffers from poor mechanical performance at UHTs, which could strongly limit its applications at UHT. Here, we successfully demonstrate that texturing is an effective strategy to greatly enhance the flexural strength of monolithic ZrB2, reaching a high value of 810 ± 60 MPa at 1600 °C when loaded in c-axis direction. We thoroughly discuss the strengthening mechanism by in-depth microstructural observations and analysis. Our discovery has technological and scientific implications for other UHT ceramic systems, especially those using ZrB2 as a matrix.

本文言語English
論文番号014202
ジャーナルScience and Technology of Advanced Materials
15
1
DOI
出版ステータスPublished - 2014 2
外部発表はい

ASJC Scopus subject areas

  • Materials Science(all)

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