Corrosion resistance and microstructural evolution of Yb-Al-Si-O glass-ceramics under molten Ca-Mg-Al-Si environment at 1350 °C

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

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The intrinsic characteristics of Yb2O3-Al2O3-SiO2 (YbAS) glass-ceramics and their resistance to corrosion by molten calcium magnesium aluminosilicate (CMAS) at 1350 °C were systematically investigated. YbAS glass-ceramics, characterized by diverse compositions, maintaining phase stability over extended durations at elevated temperatures. After CMAS corrosion for 50 h, the main reaction phases were CaAl2Si2O8 and Ca2Yb8(SiO4)6O2, accompanied by multiple ion solid solution garnet in certain components. The glass component positioned along the eutectic line of Yb2Si2O7 and mullite, with an OB value marginally exceeding that of CMAS, exhibits superior corrosion resistance to CMAS. This finding offers valuable insights for the subsequent design of environmental barrier coatings (EBCs).

Original languageEnglish
Pages (from-to)7891-7903
Number of pages13
JournalJournal of the European Ceramic Society
Volume44
Issue number13
DOIs
StatePublished - Oct 2024

Keywords

  • CMAS corrosion
  • Crystallization
  • Glass-ceramics
  • Yb-Al-Si-O

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