High porosity abradable coating
A porosity, coating technology for gas turbine engine applications
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[0008] The systems and methods disclosed herein include abradable coatings for gas turbine engine components. In an embodiment, the abradable coating includes a bond coating, an intermediate layer, and a porous layer. The bond coating includes a metal material, the intermediate layer includes a ceramic material, and the porous layer includes a ceramic material having a porosity (for example, 35% or more of its volume). The bond coat and intermediate layer can provide support and structure for the porous layer. The intermediate layer can also improve the durability of the abradable coating. The porous layer can reduce the wear of the turbine blade and the bare metal tip or the turbine blade without wearing the ceramic tip.
[0009] figure 1 It is a schematic diagram of an exemplary gas turbine engine 100. For clarity and ease of description, some surfaces have been omitted or enlarged (in this figure and other figures). In addition, the present invention may refer to a forward...
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