Component, an apparatus and a method for the manufacture of a layer system

摘要

The invention relates to a component and also an associated coating apparatus and method, including a base body ( 1 ), in particular a metallic base body, which includes at least one nickel and/or cobalt base alloy, and also a layer system arranged directly on the base body ( 1 ). The layer system includes a bond promoting layer ( 2 ) and also a thermally insulating layer arranged on the bond promoting layer, including a TGO layer ( 3 ), in particular a slow growing aluminium oxide layer ( 4 ) and/or chrome oxide layer as well as at least one oxide ceramic layer which is arranged directly on the TGO layer and a cover layer ( 5 ) of an A₂E₂O₇ pyrochlorine arranged on the oxide ceramic layer ( 4 ). A preferably includes a lanthanide, in particular gadolinium and E preferably includes zirconium, and also in particular lanthanum zirconate, and/or a perovskite phase. The layer thicknesses of the oxide ceramic layer ( 4 ) and the cover layer ( 5 ) together amount to between 50 mum and 2 mm, in particular together amount to between 100 mum and 500 mum.