| タイトル | Cyclic Oxidation of Single-Crystal NiAl-X Alloys |
| 本文（外部サイト） | http://hdl.handle.net/2060/20000060818 |
| 著者（英） | Barrett, Charles A.; Darolia, Ram; Nesbitt, James A. |
| 著者所属（英） | NASA Glenn Research Center |
| 発行日 | 1999-01-01 |
| 言語 | eng |
| 内容記述 | Several single-crystal NiAl-X alloys (X = Hf, Ti, Cr, Ga) were cyclically oxidized at 1000 C for up to 1000 1-hr cycles. The alloys all showed protective, adherent alpha-Al2O3 scale formation with positive weight change behavior throughout the test. There was no clear correlation between the composition of the various alloys and the specific weight gain although the ranking by weight change was relatively consistent for two duplicate series of samples. The presence of Hf (0.5 - 0.8 at.%) resulted in the internal formation of Al2O3/HfO2 "stringers." Diffusion of Hf to the growing oxide stringers resulted in the development of a near-surface layer depleted of these precipitates. |
| NASA分類 | Inorganic, Organic and Physical Chemistry |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/94432 |
