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Water‑oxygen corrosion and thermal shock behavior of a single-layer Yb-Al-Si-O glass-ceramics environmental barrier coating on SiCf/SiC at 1350 °C

  • Xinyu Meng
  • , Chenxi Liang
  • , Chun Guo
  • , Shaobo Yang
  • , Yujie Ma
  • , Bo Chen
  • , Juanli Deng
  • , Shangwu Fan

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

High-density and high-strength SiCf/SiC composites were obtained utilizing CaO-Yb2O3-Al2O3-SiO2 (CYbAS) glass-ceramics for matrix modification, alongside Yb2O3-Al2O3-SiO2 (YbAS) glass-ceramics for environmental barrier coating (EBC). The durability of the single-layer YbAS coating was evaluated by assessing its resistance to water‑oxygen corrosion and thermal shock, in order to ascertain its potential as an advanced EBC. The results indicated that the YbAS coating significantly reduced the growth rate of thermally grown oxide (TGO) in a 50 vol% H2O-50 vol% O2 environment at 1350 °C. Additionally, a water-cooled thermal shock test conducted in air at 1350 °C revealed no evidence of penetrative cracks or TGO formation within the coating. These results underscore the potential application of YbAS coating in high-temperature corrosive environments.

Original languageEnglish
Article number132228
JournalSurface and Coatings Technology
Volume509
DOIs
StatePublished - 1 Aug 2025

Keywords

  • Environmental barrier coating
  • Matrix modification
  • SiC/SiC
  • Thermal shock
  • Water‑oxygen corrosion
  • Yb-Al-Si-O glass-ceramics

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