| タイトル | Friction and wear of several compressor gas-path seal movements |
| 本文（外部サイト） | http://hdl.handle.net/2060/19780007286 |
| 著者（英） | Wisander, D. W.; Bill, R. C. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1978-01-01 |
| 言語 | eng |
| 内容記述 | Rub interaction experiments were conducted on a series of sintered and plasma sprayed compressor gas path seal materials in contact with Ti-6Al-4V blade tip and knife edge rotors. The most rub tolerant materials investigated were sintered Nichrome and plasma sprayed nickel 25 percent graphite. The effectiveness of providing a compliant substrate for dense seal material coatings was also demonstrated. In general, it was observed that rotor wear and high frictional energy generation rates accompanied smearing or surface densification of the materials investigated. The onset of smearing was sensitive to rub interaction parameters and seal geometry. Two complementary models were proposed to account for the smearing trends. One is based on thermal effects, the other on particulate escape effects. They were shown to be consistent with the experimental evidence at hand, and together they predict that smearing, with the onset of high energy rub conditions, is favored when incursion rates (radial motion) are low, incursion depths are high, the seal geometry is of a knife-edge character, and the seal particle size is small. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 78N15229
E-9276
NASA-TP-1128 |
| 権利 | No Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/180238 |
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