| 摘要 |
An air seal for use in a gas turbine engine includes reduced susceptibility to deflagration during operating conditions in which an excessive amount of seal material is liberated from the seal and ingested into the engine. The seal includes a seal substrate 30, and a thermally sprayed metallic bond layer 36 applied to the seal substrate 30. The bond layer 30 includes nickel and aluminum. The seal also includes a thermally sprayed abradable seal layer 38 applied to the bond layer36. The abradable material is composed of aluminum powder and silicon powder forming a metal matrix, and co-deposited methyl methacrylate particles embedded as filler in the metal matrix. The filler is less likely to deflagrate compared to conventionally used materials such as polyester. <IMAGE> |
