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Ablation resistance of ZrB2-SiC-AlN ceramic composites

  • Harbin Institute of Technology
  • Harbin University of Science and Technology

Research output: Contribution to journalArticlepeer-review

Abstract

ZrB2-20 vol.%SiC-5 vol.%AlN ceramic composites (ZSA) were fabricated by hot pressing sintering under inert gas protected, which mechanical properties were improved obviously by introducing AlN as sintering aid. Ablation tests of ZSA were conducted with different heat flux parameters in high frequency plasma wind tunnel. The results showed that ZSA exhibited excellent ablation resistance at 2000 °C for 300 s in oxidation environment and a dense coherent scale was formed after ablation, whereas a strong degradation and mass loss were observed at 2600 °C for 300 s. The ablation behavior, microstructures evolvement and the effect of AlN were analyzed.

Original languageEnglish
Pages (from-to)299-302
Number of pages4
JournalJournal of Alloys and Compounds
Volume479
Issue number1-2
DOIs
StatePublished - 24 Jun 2009

Keywords

  • Ablation resistance
  • High frequency plasma wind tunnel
  • ZrB-SiC-AlN ceramic composite

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