Enhanced water-oxygen corrosion resistance of SiC/SiC composites at 1350 °C via a single-layer Y-Al-Si-O glass-ceramics environmental barrier coating

Yujie Ma, Chun Guo, Yongjing Cui, Shaobo Yang, Xinyu Meng, Sijie Kou, Chenghua Luan, Juanli Deng, Shangwu Fan

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

This study introduces a novel approach for modifying CVI-SiC/SiC composites and constructing EBCs devoid of silicon bonding layers. The introduction of Y-Al-Si-O(YAS) system microcrystalline glass as a matrix modifier significantly reduces the preparation time for SiC/SiC composites, concurrently improving the corrosion resistance of the matrix. Subsequent preparation of monolayer YAS EBCs on a modified substrate provides excellent high-temperature corrosion resistance. Following 100 hours of water-oxygen corrosion at 1350°C, SiO2 thermal growth oxide(TGO), approximately 1 μm thick, was observed within the composites. Moreover, the mechanical properties of the coated composites remain virtually unaltered after 100 hours of corrosion.

Original languageEnglish
Article number116728
JournalJournal of the European Ceramic Society
Volume44
Issue number15
DOIs
StatePublished - Dec 2024

Keywords

  • Matrix modification
  • SiC/SiC composites
  • Water-oxygen corrosion
  • Y-Al-Si-O EBCs

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