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Growth kinetics of apatite layer evolved from calcia-magnesia-aluminosilicate (CMAS) hot corrosion reaction of (Y1-xYbx)2SiO5 ceramics at elevated temperatures of 1673 K and 1773 K.
- Source :
-
Journal of the European Ceramic Society . Feb2023, Vol. 43 Issue 2, p600-611. 12p. - Publication Year :
- 2023
-
Abstract
- Calcia-magnesia-aluminosilicate (CMAS) corrosion behaviors of hot-pressed (Y 1- x Yb x) 2 SiO 5 ceramics at 1673 K and 1773 K have been investigated. The main corrosion product of nonstoichiometric Ca-RE-Si-O apatite phase evolves with increasing temperature or prolonging corrosion time. The growth of apatite layer at 1673 K follows approximately a linear rate law, however it follows a proximately parabolic rate law at 1773 K. The growth rate of the apatite layer at 1773 K is lower than that at 1673 K in the process of interaction between CMAS and rare-earth monosilicates. Yb-doping mediates the CMAS corrosion resistance of Y 2 SiO 5 effectively by changing the growth rate of apatite layer and the composition of formed apatite phase. This work provides new insights on compositional regulation of (Y 1- x Yb x) 2 SiO 5 EBCs materials to resist CMAS corrosion. [ABSTRACT FROM AUTHOR]
- Subjects :
- *HIGH temperatures
*APATITE
*CORROSION resistance
*CERAMICS
Subjects
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 43
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 160982285
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2022.10.003