| タイトル | Internally coated air-cooled gas turbine blading |
| 本文（外部サイト） | http://hdl.handle.net/2060/19790016847 |
| 著者（英） | Stevens, W. G.; Hsu, L.; Stetson, A. R. |
| 著者所属（英） | Solar Turbines, Inc. |
| 発行日 | 1979-03-01 |
| 言語 | eng |
| 内容記述 | Ten candidate modified nickel-aluminide coatings were developed using the slip pack process. These coatings contain additives such as silicon, chromium and columbium in a nickel-aluminum coating matrix with directionally solidified MAR-M200 + Hf as the substrate alloy. Following a series of screening tests which included strain tolerance, dynamic oxidation and hot corrosion testing, the Ni-19A1-1Cb (nominal composition) coating was selected for application to the internal passages of four first-stage turbine blades. Process development results indicate that a dry pack process is suitable for internal coating application resulting in 18 percent or less reduction in air flow. Coating uniformity, based on coated air-cooled blades, was within + or - 20 percent. Test results show that the presence of additives (silicon, chromium or columbium) appeared to improve significantly the ductility of the NiA1 matrix. However, the environmental resistance of these modified nickel-aluminides were generally inferior to the simple aluminides. |
| NASA分類 | AIRCRAFT PROPULSION AND POWER |
| レポートNO | 79N25018
SR79-R-4655-15
NASA-CR-159574 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/175408 |
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