Layer system

Abstract

On account of their type of coating, layer systems of the prior art often exhibit poor adhesion to the substrate. If the components are subject to high mechanical stresses, the layer can then become detached. The layer system according to the invention has separately produced anchoring means which allow stronger attachment to the substrate than the attachment of the outer layer to the substrate.

1 - 29 . (canceled)  
   
   
       30 . A layer system, comprising: 
 a substrate having a substrate surface;    an outer layer arranged on the substrate and having an outer surface spaced apart from the substrate surface of the substrate;    a continuous anchoring device arranged in the outer layer that does not extend in the outer layer beyond the outer surface and a cross-sectional area of the continuous anchoring device is larger at the outer surface than at the substrate surface; and    an inner anchoring device arranged in the outer layer that extends within at least 10% of the thickness of the outer layer.    
   
   
       31 . The layer system as claimed in  claim 30 , wherein the continuous anchoring device or the inner anchoring device are joined to the substrate by melt metallurgy.  
   
   
       32 . The layer system as claimed in  claim 30 , wherein the material of the continuous anchoring device or the inner anchoring device in the outer layer corresponds to the material of the outer layer  
   
   
       33 . The layer system as claimed in  claim 30 , wherein the material of the continuous anchoring device or the inner anchoring device is different than the material of the outer layer.  
   
   
       34 . The layer system as claimed in  claim 30 , wherein the continuous anchoring device or the inner anchoring device are present only locally on the substrate.  
   
   
       35 . The layer system as claimed in  claim 30 , wherein the continuous anchoring device or the inner anchoring device are columnar in form.  
   
   
       36 . The layer system as claimed in  claim 30 , further comprising an interlayer arranged between the substrate surface and the outer layer, having an inner surface opposite the substrate surface.  
   
   
       37 . The layer system as claimed in  claim 36 , wherein the continuous anchoring device or the inner anchoring device are present in the outer layer or the interlayer.  
   
   
       38 . The layer system as claimed in  claim 36 , wherein the continuous anchoring device or the inner anchoring device have a different form of attachment to the substrate or to the interlayer than the outer layer to the interlayer or the interlayer to the substrate.  
   
   
       39 . The layer system as claimed in  claim 36 , wherein the continuous anchoring device extend as far as the inner surface of the interlayer or as far as the outer surface of the outer layer.  
   
   
       40 . The layer system as claimed in  claim 36 , wherein the continuous anchoring device does not extend beyond 
 the inner surface of the interlayer, or    The outer surface of the outer layer.    
   
   
       41 . The layer system as claimed in  claim 36 , wherein the interlayer is an MCrAlX layer.  
   
   
       42 . The layer system as claimed in  claim 30 , wherein the layer system is a new or refurbished turbine component.  
   
   
       43 . A layer system, comprising: 
 a substrate having a substrate surface;    an outer layer arranged on the substrate and having an outer surface spaced apart from the substrate surface of the substrate; and    a continuous anchoring device in the outer layer,    wherein the continuous anchoring device extends in the outer layer as far as the outer surface and cross-sectional area of the continuous anchoring device is larger at the outer surface than at the substrate surface.    
   
   
       44 . The layer system as claimed in  claim 43 , further comprising an interlayer arranged between the substrate surface and the outer layer and having an inner surface opposite the substrate surface.  
   
   
       45 . The layer system as claimed in  claim 44 , wherein the interlayer is an MCrAlX layer.  
   
   
       46 . The layer system as claimed in  claim 44 , wherein an inner anchoring device extends only within at least 10% of the thickness of the interlayer or only within at least 10% of the thickness of the outer layer.  
   
   
       47 . The layer system as claimed in  claim 46 , wherein the continuous anchoring device or the inner anchoring device are columnar in form.  
   
   
       48 . The layer system as claimed in  claim 44 , wherein the continuous anchoring device does not extend beyond 
 the inner surface of the interlayer, or    The outer surface of the outer layer.    
   
   
       49 . The layer system as claimed in  claim 43 , wherein the layer system is a new or refurbished turbine component.