Method for manufacturing components with a nickel base alloy as well as components manufactured therewith

Abstract

The invention relates to a method for manufacturing components with a nickel base alloy as well as to components manufactured therewith. The respective components, in particular, are to have improved mechanical properties in comparison with the conventional solutions, and are to be producible in the most differently shaped form. During the production, proceeding takes place then such that a substrate core made of nickel or a nickel base alloy, in which nickel is included with a content of at least 20 wt %, will be coated on the surface with a binding agent as well as a metal powder in which nickel is included with a content of at least 20 wt % in addition to further alloy forming elements. Subsequently, a stepped thermal treatment is carried out in which the binding agent is expelled at first, and subsequent to this sintering of the mezai powder is performed which results in alloying up a nickel substrate core and/or which develops a solid surface coating made of nickel base alloy.

1 . A method for manufacturing components with a nickel base alloy, wherein a surface coating is deposited on a substrate core made of nickel or a nickel base alloy in which said nickel is included with a content of at least 20 wt %; 
 with a binding agent as well as a metal powder, in which nickel is included with a content of at least 20 wt % in addition to further alloy forming elements; and    said coated substrate core is subjected to a stepped thermal treatment, within    at first said binding agent is expelled, and subsequent to this, sintering said metal powder is carried out during which alloying up said nickel substrate core and/or a solid surface coating formed of said nickel base alloy is developed.    
     
     
         2 . A method according to  claim 1 , characterized in that a metal powder is used, in which the content of said nickel is smaller than the content of said nickel in a substrate core formed of said nickel base alloy.  
     
     
         3 . A method according to  claim 1 , characterized in that a metal powder is used, in which carbon, chromium, molybdenum, iron, cobalt, niobium, titanium, aluminum, boron, zircon, manganese, silicon, and/or lanthanum is/are included in addition to said nickel.  
     
     
         4 . A method according to,  claim 1 , characterized in that a porous foam body is used as said substrate core.  
     
     
         5 . A method according to  claim 4 , characterized in that said foam body is coated with a suspension/dispersion formed of said binding agent and said metal powder, and subsequently said stepped thermal treatment is carried out.  
     
     
         6 . A method according to  claim 5 , characterized in that said coated foam body is pressed for removing suspension/dispersion from pores of said foam body.  
     
     
         7 . A method according to  claim 4 , characterized in that said foam body is coated with said binding agent, and said coated foam body is pressed for removing said binding agent from pores of said foam body, said metal powder is deposited on said foam body wetted with said binding agent, and subsequently said stepped thermal treatment is carried out.  
     
     
         8 . A method according to  claim 7 , characterized in that said foam body is vibrated during and/or after depositing said metal powder.  
     
     
         9 . A method according to  claim 4 , characterized in that said coated substrate core or said foam body is deformed before said thermal treatment.  
     
     
         10 . A method according to  claim 1 , characterized in that a surface of at least said one substrate core is coated with a suspension/dispersion, said coated surface is brought into touching contact with a surface of at least said one second substrate core, and an adhesive force type connection of said substrate cores is developed by means of said thermal treatment.  
     
     
         11 . A method according to  claim 7 , characterized in that said respective surface of said second or another substrate core is coated as well.  
     
     
         12 . A method according to  claim 1 , characterized in that multiple coating is carried out on said surfaces of said substrate cores.  
     
     
         13 . A method according to  claim 1 , characterized in that areas of said substrate core are coated in a different form.  
     
     
         14 . A method according to  claim 9 , characterized in that said coating is carried out with said suspensions/dispersions of different consistencies and/or of a different layer thickness.  
     
     
         15 . A method according to  claim 1 , characterized in that a powder mixture is used with said nickel and powders of another alloy forming elements which have been subjected to high energy grinding.  
     
     
         16 . A method according to  claim 1 , characterized in that sintering is carried out at temperatures of above 1000° C., and in a reducing or inert atmosphere.  
     
     
         17 . A method according to  claim 1 , characterized in that a graduated alloy composition starting from said surface is developed.  
     
     
         18 . A method according to  claim 1 , characterized in that a graduated alloy composition is developed at least inside a joining area of a closure by adhesive force type connection.