| タイトル | Friction and wear of sintered fibermetal abradable seal materials |
| 著者（英） | Shiembob, L. T.; Bill, R. C. |
| 著者所属（英） | NASA Lewis Research Center|Pratt and Whitney Aircraft Group|Army Air Mobility Research and Development Lab. |
| 発行日 | 1977-04-01 |
| 言語 | eng |
| 内容記述 | Three abradable gas-path seal-material systems based on a sintered NiCrAlY fiber metal structure were evaluated under a range of wear conditions representative of those likely to be encountered in various knife-edge seal (labyrinth or shrouded turbine) applications. Conditions leading to undesirable wear of the rotating knife were identified, and a model proposed based on thermal effects arising under different rub conditions. It was found, and predicted by the model, that low incursion (plunge) rates tended to promote smearing of the low-density sintered material with consequent wear to the knife edge. Tradeoff benefits between baseline 19 percent dense material, a similar material of increased density, and a self-lubricating coating applied to the 19 percent dense material were identified on the basis of relative rub tolerance and erosion resistance. |
| NASA分類 | METALLIC MATERIALS |
| レポートNO | 78A23451 |
| 権利 | Copyright |
| URI | https://repository.exst.jaxa.jp/dspace/handle/a-is/433825 |
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