| タイトル | Corrosion Issues for Ceramics in Gas Turbines |
| 著者（英） | Jacobson, Nathan; Opila, Elizabeth; Nickel, Klaus G. |
| 著者所属（英） | NASA Glenn Research Center |
| 発行日 | 2004-01-01 |
| 言語 | eng |
| 内容記述 | The requirements for hot-gas-path materials in gas turbine engines are demanding. These materials must maintain high strength and creep resistance in a particularly aggressive environment. A typical gas turbine environment involves high temperatures, rapid gas flow rates, high pressures, and a complex mixture of aggressive gases. Over the past forty years, a wealth of information on the behavior of ceramic materials in heat engine environments has been obtained. In the first part of the talk we summarize the behavior of monolithic SiC and Si3N4. These materials show excellent baseline behavior in clean, oxygen environments. However the aggressive components in a heat engine environment such as water vapor and salt deposits can be quite degrading. In the second part of the talk we discuss SiC-based composites. The critical issue with these materials is oxidation of the fiber coating. We conclude with a brief discussion of future directions in ceramic corrosion research. |
| NASA分類 | Nonmetallic Materials |
| 権利 | No Copyright |
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