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

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

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number014202
JournalScience and Technology of Advanced Materials
Volume15
Issue number1
DOIs
Publication statusPublished - 2014 Feb 1
Externally publishedYes

Fingerprint

Microstructure
High temperature applications
Thermooxidation
Texturing
Oxidation resistance
Zirconium
Bending strength
Melting point
Temperature
Direction compound
zirconium diboride

Keywords

  • high-temperature flexural strength
  • microstructure texture
  • ZrB

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Microstructure and high-temperature strength of textured and non-textured ZrB2 ceramics. / Wu, Wen Wen; Sakka, Yoshio; Estili, Mehdi; Suzuki, Tohru; Nishimura, Toshiyuki; Zhang, Guo Jun.

In: Science and Technology of Advanced Materials, Vol. 15, No. 1, 014202, 01.02.2014.

Research output: Contribution to journalArticle

Wu, Wen Wen ; Sakka, Yoshio ; Estili, Mehdi ; Suzuki, Tohru ; Nishimura, Toshiyuki ; Zhang, Guo Jun. / Microstructure and high-temperature strength of textured and non-textured ZrB2 ceramics. In: Science and Technology of Advanced Materials. 2014 ; Vol. 15, No. 1.
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