Component with a metallurgically bonded coating

Abstract

The invention relates to a component ( 1 ) having a coating ( 3 ) that is metallurgically bonded on as well as thermally sprayed on and re-melted. In order to prevent wear phenomena from continuing to occur when force impacts occur in the component ( 1 ) and further surface stress occurs, the invention provides that the coating ( 3 ) is provided with a thermal spray layer ( 4 ).

1 . Component ( 1 ) having a coating ( 3 ) that is metallurgically bonded as well as thermally sprayed on and re-melted,
 wherein   the coating ( 3 ) is provided with at least one thermal spray layer ( 4 ).   
     
     
         2 . Component according to  claim 1 ,
 wherein   the layer ( 4 ) is re-melted.   
     
     
         3 . Component according to  claim 2 ,
 wherein   the thickness of the layer ( 4 ) amounts to between 5 and 500 μm.   
     
     
         4 . Component according to  claim 2 ,
 wherein   the thickness of the layer ( 4 ) amounts to between 5 and 150 μm.   
     
     
         5 . Component according to  claim 3 ,
 wherein   the thickness of the layer ( 4 ) amounts to between 5 and 30 μm.   
     
     
         6 . Component according to  claim 1 ,
 wherein   the layer ( 4 ) is a plasma layer composed of oxide ceramic material.   
     
     
         7 . Component according to  claim 1 ,
 wherein   the layer ( 4 ) is composed of metal-bonded carbides, particularly an HVOF layer composed of WC—CrC—Ni.   
     
     
         8 . Component according to  claim 1 ,
 wherein   the coating ( 3 ) is composed of a hot-gas-oxidation-resistant material.   
     
     
         9 . Component according to  claim 1 ,
 wherein   the coating ( 3 ) is corrosion-resistant.   
     
     
         10 . Component according to  claim 1 ,
 wherein   the coating ( 3 ) is situated on the surface ( 2 ) and/or the inner surface of the component ( 1 ).   
     
     
         11 . Method for the production of a metallurgically bonded coating ( 3 ), which is thermally sprayed onto a surface ( 2 ) of a component ( 1 ) and re-melted by means of a laser,
 wherein   at least one further layer ( 4 ) is thermally sprayed onto the coating ( 3 ).   
     
     
         12 . Method according to  claim 11 ,
 wherein   the layer ( 4 ) is re-melted.   
     
     
         13 . Method according to  claim 12 ,
 wherein   the layer ( 4 ) is re-melted by means of a laser.   
     
     
         14 . Method according to  claim 11 ,
 wherein   the layer ( 4 ) is applied by means of plasma spraying.   
     
     
         15 . Method according to  claim 11 ,
 wherein   the layer ( 4 ) is applied by means of high-velocity flame spraying.