| abstract |
In addition to good thermal barrier properties, thermal barrier coating systems also have to have a long thermal barrier coating service life. The coating system according to the invention comprises a specially adapted layer sequence made up of metallic bonding layer, which consists of an NiCoCrAlX, inner ceramic layer and outer ceramic layer, at least 80% of which is made up of the pyrochlore phase Gd 2 Zr 2 O 7 or Gd 2 Hf 2 O 7 . |