Ablation behavior and mechanism of double-layer ZrB2-based ceramic coating for lightweight carbon-bonded carbon fiber composites under oxyacetylene flame at elevate temperature

Baosheng Xu*, Rujie He, Changqing Hong, Yongbin Ma, Weibin Wen, Huimin Li, Tianbao Cheng, Daining Fang, Yazheng Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Citations (Scopus)

Abstract

Ablation behavior of double-layer ZrB2-based ceramic coating for lightweight ZrB2modified carbon-bonded carbon fiber (CBCFs/ZrB2) composites was tested under an oxyacetylene flame at elevate temperature (1500, 1600 and 1700 °C) for 600s. The results indicate that the ablation temperature has significant effect on the microstructure and ablation behavior of the coated CBCFs/ZrB2composites. The as-prepared coating could efficiently protect CBCFs/ZrB2composites against oxidation from 1500 to 1700 °C for 600s. The ZrB2-based ceramic coating had a good self-healing ability at 1500 °C and 1600 °C. With the increasing ablation temperature to 1700 °C, the coating exhibited severe ablation. However, the molten SiO2from the coating seeped into the CBCFs/ZrB2composites forming a coating layer on the carbon fibers surface which acted as an efficacious oxidation protective barrier.

Original languageEnglish
Pages (from-to)551-560
Number of pages10
JournalJournal of Alloys and Compounds
Volume702
DOIs
Publication statusPublished - 2017

Keywords

  • Ablation behavior
  • Carbon-bonded carbon fiber composites
  • Ceramic coating
  • Oxidation resistance

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