热处理对等离子喷涂 BSAS 环境障涂层性能影响

Yongjing Cui, Zhiliang Hong, Mengqiu Guo, Changliang Wang, Jian Jiao, Laifei Cheng

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

Using BSAS powder prepared by solid-state sintering method, Si/Mullite + BSAS/BSAS three-layer environmental barrier coatings were fabricated on SiC substrate by atmospheric plasma spraying process. The phase composition and microstructure evolution behaviour of the environmental barrier coating subjected to various heat treatment temperatures were studied by scanning electron microscope, energy dispersive spectrometer and X-ray diffraction analyzer, etc. The results indicate that as-sprayed BSAS coating is mainly composed of monoclinic BAS phase and amorphous phase; After heat treatment at 1100 °C, the amorphous phase inside the coating is transformed to hexagonal BAS phase. With the temperature increases to 1200 °C, the hexagonal BAS phase gradually changes to the monoclinic BAS phase. The fraction of the monoclinic BAS phase reaches the maximum at 1300 °C heat-treated; With further increase of the heat treatment temperature, tridymite SiO2, Ba3SiO5 and paracelsian BAS phase appear. Moreover, silicon droplets exude is detected during heat treatment at 1400 °C.

投稿的翻译标题Effect of heat treatment on properties of plasma-sprayed BSAS environmental barrier coating
源语言繁体中文
页(从-至)59-66
页数8
期刊Cailiao Gongcheng/Journal of Materials Engineering
51
3
DOI
出版状态已出版 - 3月 2023

关键词

  • BSAS
  • environmental barrier coating
  • plasma spraying
  • silicon carbide ceramic matrix composite

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