Abradable seal and method of forming abradable seal

摘要

An abradable seal having a metallic substrate and a multi-layered ceramic coating on the metallic substrate. The multi-layered ceramic coating includes a base layer deposited on the metallic substrate, an abradable layer overlaying the first layer, and an abrading layer overlaying the second layer. The abrading layer is formed of an abrading material. A turbine system and a method for forming an abradable seal are also disclosed.