Component comprising a masking layer

Abstract

Masking layers for components according to the prior art react with the base material of the component and/or are difficult to remove again. The component according to the invention has a masking layer which can very easily be removed following coating of the components, since on the one hand the bonding between the masking layer and the base material of the component is poor, or the masking layer can easily be removed through penetration of a liquid.

1 - 32 . (canceled)  
   
   
       33 . A turbine component, comprising: 
 a masking layer arranged on a portion of the component that contains carbon at an outer surface of the masking layer; and    a plurality of material layers arranged on the masking layer that forms a ceramic layer or a ceramic precursor layer on the component and the plurality of material layers chemically reacts with the masking layer to aid in the removal of a portion of the masking layer material.    
   
   
       34 . The turbine component as claimed in  claim 33 , wherein the turbine component is a blade or vane.  
   
   
       35 . The turbine component as claimed in  claim 33 , wherein the material layers are a ceramic thermal barrier coating.  
   
   
       36 . The turbine component as claimed in  claim 35 , wherein the thermal barrier coating comprises a bond coat.  
   
   
       37 . The turbine component as claimed in  claim 33 , wherein the masking layer comprises three sub-layers, 
 a first sub-layer arranged on a base material of the component and provides bonding to the base material of the component,    a second gradient sub-layer arranged on the first sub-layer, and    a third reactive sub-layer arranged on the gradient layer and adapted to react with the layers of material applied to the component.    
   
   
       38 . The turbine component as claimed in  claim 37 , wherein the first sub-layer comprises carbosilane.  
   
   
       39 . The turbine component as claimed in  claim 37 , wherein the gradient layer comprises polysiloxane, a metal, or a metal-ceramic composite.  
   
   
       40 . The turbine component as claimed in  claim 37 , wherein the gradient layer comprises polysiloxane, the metal, and a metal-ceramic composite.  
   
   
       41 . The turbine component as claimed in  claim 37 , wherein a filler material is added to the gradient sub-layer to inhibit thermo-mechanical stresses in the masking layer.  
   
   
       42 . The turbine component as claimed in  claim 41 , wherein a filler material is added to the gradient sub-layer to prevent thermo-mechanical stresses in the masking layer.  
   
   
       43 . The turbine component as claimed in  claim 37 , wherein a filler material is added to the gradient sub-layer to inhibit thermo-mechanical stresses between the masking layer and a substrate of the component.  
   
   
       44 . The component as claimed in  claim 33 , wherein the masking layer is a gradient layer.  
   
   
       45 . A turbine blade or vane, comprising: 
 a first functional layer arranged on a base material of the component that promotes bonding to the component base material;    a gradient layer arranged on the first functional layer that promotes a dense and a crack free coating of the component; and    a reactive layer arranged to the gradient layer that reacts with the first functional and gradient layers to promote removal of the first functional and gradient layers.    
   
   
       46 . The turbine blade or vane as claimed in  claim 45 , wherein the reactive layer reacts with the gradient layers to form a water soluble layer.  
   
   
       47 . The turbine blade or vane as claimed in  claim 45 , wherein the first functional layer comprises carbosilane.  
   
   
       48 . The turbine blade or vane as claimed in  claim 45 , wherein the gradient layer comprises polysiloxane, a metal, and a metal-ceramic composite.  
   
   
       49 . The turbine blade or vane as claimed in  claim 45 , wherein the first functional layer is applied to a portion of the base material.