TY - JOUR
T1 - Corrosion resistance and microstructural evolution of Y-Al-Si-O glass-ceramics environmental barrier coating candidate in the presence of CMAS
AU - Ma, Yujie
AU - Guo, Chun
AU - Meng, Xinyu
AU - Yang, Shaobo
AU - Kou, Sijie
AU - Deng, Juanli
AU - Fan, Shangwu
AU - Liu, Xingmin
N1 - Publisher Copyright:
© 2024 Elsevier Inc.
PY - 2025/2
Y1 - 2025/2
N2 - The corrosion resistance of Y2O3-Al2O3-SiO2 (YAS) microcrystalline glass against molten calcium‑magnesium-aluminium-silicate (CMAS) attack was systematically investigated at 1350 °C. YAS microcrystalline glass, possessing an optical basicity (OB) value comparable to that of CMAS, demonstrates enhanced resistance to CMAS corrosion, with a corrosion depth of ∼70 μm following 10 h of exposure. YAS ceramics, upon corrosion, formed two distinct layers at the interface: a transition layer adjacent to the CMAS melt and a reaction layer closer to the YAS ceramic. The transition layer comprised anorthite and CMAS melt, while the reaction layer included apatite, anorthite, and a small amount of the amorphous phase. The transition and reaction layers, formed after corrosion, were extremely dense, with no cracks or other destructive defects observed. The superior CMAS corrosion resistance of YAS ceramics provides substantial theoretical support for its application as an environmental barrier coating (EBC).
AB - The corrosion resistance of Y2O3-Al2O3-SiO2 (YAS) microcrystalline glass against molten calcium‑magnesium-aluminium-silicate (CMAS) attack was systematically investigated at 1350 °C. YAS microcrystalline glass, possessing an optical basicity (OB) value comparable to that of CMAS, demonstrates enhanced resistance to CMAS corrosion, with a corrosion depth of ∼70 μm following 10 h of exposure. YAS ceramics, upon corrosion, formed two distinct layers at the interface: a transition layer adjacent to the CMAS melt and a reaction layer closer to the YAS ceramic. The transition layer comprised anorthite and CMAS melt, while the reaction layer included apatite, anorthite, and a small amount of the amorphous phase. The transition and reaction layers, formed after corrosion, were extremely dense, with no cracks or other destructive defects observed. The superior CMAS corrosion resistance of YAS ceramics provides substantial theoretical support for its application as an environmental barrier coating (EBC).
KW - CMAS corrosion
KW - Corrosion thermodynamics
KW - Microstructural evolution
KW - Y-Al-Si-O glass-ceramics
UR - http://www.scopus.com/inward/record.url?scp=85213208561&partnerID=8YFLogxK
U2 - 10.1016/j.matchar.2024.114685
DO - 10.1016/j.matchar.2024.114685
M3 - 文章
AN - SCOPUS:85213208561
SN - 1044-5803
VL - 220
JO - Materials Characterization
JF - Materials Characterization
M1 - 114685
ER -