Beschichtungssystem zum Zurückhalten geschmolzenen Materials bei Feuer in Gasturbinen

摘要

In a gas turbine engine, a method and apparatus for containing molten materials and ignited titanium and titanium alloys within the confines of the turbine engine environment. The method includes the step of first applying a bond coating 52 to the inner surface 44 of the outer compressor casing 36. The bond coating 52 is then plasma oversprayed with a non-reactive thermally insulative ceramic top coating 54. The apparatus includes a substrate 48 having a bond coating and a ceramic top coating, surrounding at least a portion of the gas turbine engine, for containing turbine engine fires within the turbine engine environment. Preferably, the bond coating 52 is a Ni-Co-Cr-Al-Y alloy, and the top coat 54 is stabilized zirconia.