Anti-ablation Property of ZrB2/SiC/Ta2O5 Coat-ings Prepared by Atmosphere Plasma Spraying

Yanbo Liu, Jiayi Guo, Zhuang Ma*, Shijie Sun, Xingtao Luan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

To improve the anti-ablation property of carbon/carbon (C/C) composites, the double-layer coatings with SiC/Al2O3 as an inner layer and ZrB2/SiC/Ta2O5 as an outer layer were prepared by atmosphere plasma spraying. The phase composition, microstructure and element distribution of the coatings before and after ablation were analyzed using X-ray diffraction, scanning electron microscopy and energy dispersive X-ray spectroscopy, respectively. There are no cracks on the surface coating and the connection of two coatings and the SiC/Al2O3 coating with substrate is well. The distribution of elements Zr, Si and Ta on the coating are similar, which indicates the good homogeneity of coating. Ablation resistance of coated C/C was tested by the oxyacetylene flame at 1800 °C. The mosaic structure formed during the ablation process is conducive to prevent the diffusion of O2, and the Ta-Si-O glassy layer formed on the surface coating has a protective effect. The coating exhibits a good anti-ablation ability.

Translated title of the contribution等离子喷涂制备ZrB2/SiC/Ta2O5涂层抗烧蚀性能研究
Original languageEnglish
Pages (from-to)72-77
Number of pages6
JournalXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume47
Publication statusPublished - 1 Jul 2018

Keywords

  • Ablation
  • C/C
  • Mosaic structure
  • Ta-Si-O glassy layer

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Liu, Y., Guo, J., Ma, Z., Sun, S., & Luan, X. (2018). Anti-ablation Property of ZrB2/SiC/Ta2O5 Coat-ings Prepared by Atmosphere Plasma Spraying. Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering, 47, 72-77.