Anisotropy oxidation of textured ZrB2–MoSi2 ceramics

Hai-Tao Liu, Ji Zou, De Wei Ni, Ji-Xuan Liu, Guo-Jun Zhang

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

Oxidation behavior of hot forged textured ZrB2–20vol% MoSi2 ceramics with platelet ZrB2 grains was investigated at 1500°C for exposure time from 0.5 to 12h. Compared to untextured ceramics, the textured ceramics showed obvious anisotropic oxidation behavior and the surface normal to the hot forging pressure demonstrated better oxidation resistance. Such improvement in the oxidation resistance is primarily considered as a higher intrinsic ZrB2 atomic density on the orientated {00l} planes in the textured ceramics. It is expectable that the anisotropic textured ZrB2–MoSi2 ceramics can offer better oxidation resistance when a certain surface with higher oxidation resistance is exposed to air at elevated temperature.
Original languageEnglish
JournalJournal of the European Ceramic Society
Volume32
Issue number12
Pages (from-to)3469-3476
ISSN0955-2219
DOIs
Publication statusPublished - 2012

Keywords

  • Borides
  • Oxidation resistance
  • Anisotropy
  • Silicides

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