Oxidation behavior of ZrB2-SiC composites at low pressures

Rong Tu, Qingyun Sun, Song Zhang, Mingxu Han, Qizhong Li, Hidenori Hirayama, Lianmeng Zhang, Takashi Goto

Research output: Contribution to journalArticlepeer-review

23 Citations (Scopus)


ZrB2-60 mol%SiC composite with a eutectic microstructure was oxidized at 1573 to 1873 K with reduced total pressures (Ptot) and low oxygen partial pressures (PO2). The mass change was continuously measured by a thermobalance, and then fit with a multiple paralinear model. Oxidation scale of SiO2/ZrO2+SiO2/ZrO2/ZrB2 was formed at PO2 > 0.13 kPa, whereas only porous ZrO2 remained at PO2 < 0.13 kPa, Ptot < 1.33 kPa and higher than 1773 K. With increasing PO2, the parabolic oxidation constant decreased, whereas the linear oxidation constant increased.

Original languageEnglish
Pages (from-to)214-222
Number of pages9
JournalJournal of the American Ceramic Society
Issue number1
Publication statusPublished - 2015 Jan

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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