Corrosion of a unidirectionally solidified Al2O3/YAG eutectic composite in a combustion environment

Owing to their remarkable higher creep resistance, some oxides eutectic composites those fabricated by unidirectional solidification are prime candidates for structural components used in a severe corrosive environment at high temperatures. In this paper, the possibility of an Al2O3/YAG eutectic com...

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Bibliographic Details
Published in:Journal of the European Ceramic Society 2005, Vol.25 (8), p.1269-1274
Main Authors: OTSUKA, Akihiko, WAKU, Yoshiharu, TANAKA, Ryohei
Format: Article
Language:English
Subjects:
Applied sciences
Building materials. Ceramics. Glasses
Ceramic industries
Cermets, ceramic and refractory composites
Chemical industry and chemicals
Cross-disciplinary physics: materials science
rheology
Exact sciences and technology
Materials science
Other materials
Physics
Specific materials
Structural ceramics
Technical ceramics
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Summary:Owing to their remarkable higher creep resistance, some oxides eutectic composites those fabricated by unidirectional solidification are prime candidates for structural components used in a severe corrosive environment at high temperatures. In this paper, the possibility of an Al2O3/YAG eutectic composite for high-temperature application, where the materials would be exposed to combustion gases, was investigated. The Al2O3/YAG eutectic composite was stable at 1700 C in an atmosphere of oxygen/water vapor (O2/H2O), showing only slight changes in microstructure, volume and flexural strength after an exposure for 200h. Thus, Al2O3/YAG eutectic composite is among the most promising ceramics for structural applications at high temperatures.
ISSN:0955-2219
1873-619X
DOI:10.1016/j.jeurceramsoc.2005.01.008